1
|
Monteagudo B, Marqués FM, Gibelin J, Orr NA, Corsi A, Kubota Y, Casal J, Gómez-Camacho J, Authelet G, Baba H, Caesar C, Calvet D, Delbart A, Dozono M, Feng J, Flavigny F, Gheller JM, Giganon A, Gillibert A, Hasegawa K, Isobe T, Kanaya Y, Kawakami S, Kim D, Kiyokawa Y, Kobayashi M, Kobayashi N, Kobayashi T, Kondo Y, Korkulu Z, Koyama S, Lapoux V, Maeda Y, Motobayashi T, Miyazaki T, Nakamura T, Nakatsuka N, Nishio Y, Obertelli A, Ohkura A, Ota S, Otsu H, Ozaki T, Panin V, Paschalis S, Pollacco EC, Reichert S, Rousse JY, Saito AT, Sakaguchi S, Sako M, Santamaria C, Sasano M, Sato H, Shikata M, Shimizu Y, Shindo Y, Stuhl L, Sumikama T, Sun YL, Tabata M, Togano Y, Tsubota J, Uesaka T, Yang ZH, Yasuda J, Yoneda K, Zenihiro J. Mass, Spectroscopy, and Two-Neutron Decay of ^{16}Be. Phys Rev Lett 2024; 132:082501. [PMID: 38457706 DOI: 10.1103/physrevlett.132.082501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/18/2023] [Accepted: 01/29/2024] [Indexed: 03/10/2024]
Abstract
The structure and decay of the most neutron-rich beryllium isotope, ^{16}Be, has been investigated following proton knockout from a high-energy ^{17}B beam. Two relatively narrow resonances were observed for the first time, with energies of 0.84(3) and 2.15(5) MeV above the two-neutron decay threshold and widths of 0.32(8) and 0.95(15) MeV, respectively. These were assigned to be the ground (J^{π}=0^{+}) and first excited (2^{+}) state, with E_{x}=1.31(6) MeV. The mass excess of ^{16}Be was thus deduced to be 56.93(13) MeV, some 0.5 MeV more bound than the only previous measurement. Both states were observed to decay by direct two-neutron emission. Calculations incorporating the evolution of the wave function during the decay as a genuine three-body process reproduced the principal characteristics of the neutron-neutron energy spectra for both levels, indicating that the ground state exhibits a strong spatially compact dineutron component, while the 2^{+} level presents a far more diffuse neutron-neutron distribution.
Collapse
Affiliation(s)
- B Monteagudo
- LPC Caen, ENSICAEN, CNRS/IN2P3, Université de Caen, Normandie Université, 14050 Caen, France
- FRIB, Michigan State University, East Lansing, Michigan 48824, USA
| | - F M Marqués
- LPC Caen, ENSICAEN, CNRS/IN2P3, Université de Caen, Normandie Université, 14050 Caen, France
| | - J Gibelin
- LPC Caen, ENSICAEN, CNRS/IN2P3, Université de Caen, Normandie Université, 14050 Caen, France
| | - N A Orr
- LPC Caen, ENSICAEN, CNRS/IN2P3, Université de Caen, Normandie Université, 14050 Caen, France
| | - A Corsi
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - Y Kubota
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - J Casal
- Dipartimento di Fisica e Astronomia "G. Galilei" and INFN-Sezione di Padova, Via Marzolo 8, 35131 Padova, Italy
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Apartado 1065, E-41080 Sevilla, Spain
| | - J Gómez-Camacho
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Apartado 1065, E-41080 Sevilla, Spain
| | - G Authelet
- Département des Accélérateurs, de Cryogénie et de Magnétisme, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Caesar
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - D Calvet
- Département d'électronique des Détecteurs et d'Informatique pour la Physique, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A Delbart
- Département d'électronique des Détecteurs et d'Informatique pour la Physique, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - M Dozono
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - J Feng
- School of Physics, Peking University, Beijing 100871, China
| | - F Flavigny
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - J-M Gheller
- Département des Accélérateurs, de Cryogénie et de Magnétisme, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A Giganon
- Département d'électronique des Détecteurs et d'Informatique pour la Physique, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A Gillibert
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - K Hasegawa
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kanaya
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - S Kawakami
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - D Kim
- Department of Physics, Ewha Womans University, Republic of Korea
| | - Y Kiyokawa
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - M Kobayashi
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - N Kobayashi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Z Korkulu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Koyama
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - V Lapoux
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - Y Maeda
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Miyazaki
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - Y Nishio
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - A Obertelli
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - A Ohkura
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - S Ota
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Ozaki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - V Panin
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Paschalis
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - E C Pollacco
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - S Reichert
- Department of Physics, Technische Universität Munchen, 85748 Garching bei München, Germany
| | - J-Y Rousse
- Département d'Ingénierie des Systèmes, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Sakaguchi
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - M Sako
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Santamaria
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - M Sasano
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Shikata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Shindo
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - L Stuhl
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Sumikama
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y L Sun
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - M Tabata
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Uesaka
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Z H Yang
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Yasuda
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Zenihiro
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| |
Collapse
|
2
|
Kondo Y, Achouri NL, Falou HA, Atar L, Aumann T, Baba H, Boretzky K, Caesar C, Calvet D, Chae H, Chiga N, Corsi A, Delaunay F, Delbart A, Deshayes Q, Dombrádi Z, Douma CA, Ekström A, Elekes Z, Forssén C, Gašparić I, Gheller JM, Gibelin J, Gillibert A, Hagen G, Harakeh MN, Hirayama A, Hoffman CR, Holl M, Horvat A, Horváth Á, Hwang JW, Isobe T, Jiang WG, Kahlbow J, Kalantar-Nayestanaki N, Kawase S, Kim S, Kisamori K, Kobayashi T, Körper D, Koyama S, Kuti I, Lapoux V, Lindberg S, Marqués FM, Masuoka S, Mayer J, Miki K, Murakami T, Najafi M, Nakamura T, Nakano K, Nakatsuka N, Nilsson T, Obertelli A, Ogata K, de Oliveira Santos F, Orr NA, Otsu H, Otsuka T, Ozaki T, Panin V, Papenbrock T, Paschalis S, Revel A, Rossi D, Saito AT, Saito TY, Sasano M, Sato H, Satou Y, Scheit H, Schindler F, Schrock P, Shikata M, Shimizu N, Shimizu Y, Simon H, Sohler D, Sorlin O, Stuhl L, Sun ZH, Takeuchi S, Tanaka M, Thoennessen M, Törnqvist H, Togano Y, Tomai T, Tscheuschner J, Tsubota J, Tsunoda N, Uesaka T, Utsuno Y, Vernon I, Wang H, Yang Z, Yasuda M, Yoneda K, Yoshida S. Publisher Correction: First observation of 28O. Nature 2023; 623:E13. [PMID: 37935927 PMCID: PMC10665181 DOI: 10.1038/s41586-023-06815-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Affiliation(s)
- Y Kondo
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan.
- RIKEN Nishina Center, Saitama, Japan.
| | - N L Achouri
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
| | - H Al Falou
- Lebanese University, Beirut, Lebanon
- Lebanese-French University of Technology and Applied Sciences, Deddeh, Lebanon
| | - L Atar
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - T Aumann
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz Research Academy Hesse for FAIR, Darmstadt, Germany
| | - H Baba
- RIKEN Nishina Center, Saitama, Japan
| | - K Boretzky
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - C Caesar
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - D Calvet
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - H Chae
- Institute for Basic Science, Daejeon, Republic of Korea
| | - N Chiga
- RIKEN Nishina Center, Saitama, Japan
| | - A Corsi
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - F Delaunay
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
| | - A Delbart
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Q Deshayes
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
| | | | - C A Douma
- ESRIG, University of Groningen, Groningen, The Netherlands
| | - A Ekström
- Institutionen för Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden
| | | | - C Forssén
- Institutionen för Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden
| | - I Gašparić
- RIKEN Nishina Center, Saitama, Japan
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
- Ruđer Bošković Institute, Zagreb, Croatia
| | - J-M Gheller
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - J Gibelin
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
| | - A Gillibert
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - G Hagen
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, USA
| | - M N Harakeh
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- ESRIG, University of Groningen, Groningen, The Netherlands
| | - A Hirayama
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - C R Hoffman
- Physics Division, Argonne National Laboratory, Argonne, IL, USA
| | - M Holl
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - A Horvat
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - Á Horváth
- Eötvös Loránd University, Budapest, Hungary
| | - J W Hwang
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul, Republic of Korea
| | - T Isobe
- RIKEN Nishina Center, Saitama, Japan
| | - W G Jiang
- Institutionen för Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden
| | - J Kahlbow
- RIKEN Nishina Center, Saitama, Japan
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | | | - S Kawase
- Department of Advanced Energy Engineering Science, Kyushu University, Fukuoka, Japan
| | - S Kim
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul, Republic of Korea
| | | | - T Kobayashi
- Department of Physics, Tohoku University, Miyagi, Japan
| | - D Körper
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - S Koyama
- Department of Physics, The University of Tokyo, Tokyo, Japan
| | - I Kuti
- Atomki, Debrecen, Hungary
| | - V Lapoux
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - S Lindberg
- Institutionen för Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden
| | - F M Marqués
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
| | - S Masuoka
- Center for Nuclear Study, The University of Tokyo, Saitama, Japan
| | - J Mayer
- Institut für Kernphysik, Universität zu Köln, Köln, Germany
| | - K Miki
- Department of Physics, Tohoku University, Miyagi, Japan
| | - T Murakami
- Department of Physics, Kyoto University, Kyoto, Japan
| | - M Najafi
- ESRIG, University of Groningen, Groningen, The Netherlands
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
- RIKEN Nishina Center, Saitama, Japan
| | - K Nakano
- Department of Advanced Energy Engineering Science, Kyushu University, Fukuoka, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kyoto, Japan
| | - T Nilsson
- Institutionen för Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden
| | - A Obertelli
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - K Ogata
- Department of Physics, Kyushu University, Fukuoka, Japan
- Research Center for Nuclear Physics, Osaka University, Osaka, Japan
- Department of Physics, Osaka City University, Osaka, Japan
| | - F de Oliveira Santos
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - N A Orr
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
| | - H Otsu
- RIKEN Nishina Center, Saitama, Japan
| | - T Otsuka
- RIKEN Nishina Center, Saitama, Japan
- Department of Physics, The University of Tokyo, Tokyo, Japan
| | - T Ozaki
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - V Panin
- RIKEN Nishina Center, Saitama, Japan
| | - T Papenbrock
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, USA
| | - S Paschalis
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - A Revel
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - D Rossi
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - T Y Saito
- Department of Physics, The University of Tokyo, Tokyo, Japan
| | - M Sasano
- RIKEN Nishina Center, Saitama, Japan
| | - H Sato
- RIKEN Nishina Center, Saitama, Japan
| | - Y Satou
- Department of Physics and Astronomy, Seoul National University, Seoul, Republic of Korea
| | - H Scheit
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - F Schindler
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - P Schrock
- Center for Nuclear Study, The University of Tokyo, Saitama, Japan
| | - M Shikata
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - N Shimizu
- Center for Computational Sciences, University of Tsukuba, Ibaraki, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Saitama, Japan
| | - H Simon
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | | | - O Sorlin
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - L Stuhl
- RIKEN Nishina Center, Saitama, Japan
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon, Republic of Korea
| | - Z H Sun
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, USA
| | - S Takeuchi
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - M Tanaka
- Department of Physics, Osaka University, Osaka, Japan
| | - M Thoennessen
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI, USA
| | - H Törnqvist
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
- Department of Physics, Rikkyo University, Tokyo, Japan
| | - T Tomai
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - J Tscheuschner
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - N Tsunoda
- Center for Nuclear Study, The University of Tokyo, Saitama, Japan
| | - T Uesaka
- RIKEN Nishina Center, Saitama, Japan
| | - Y Utsuno
- Advanced Science Research Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - I Vernon
- Department of Mathematical Sciences, Durham University, Durham, UK
| | - H Wang
- RIKEN Nishina Center, Saitama, Japan
| | - Z Yang
- RIKEN Nishina Center, Saitama, Japan
| | - M Yasuda
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - K Yoneda
- RIKEN Nishina Center, Saitama, Japan
| | - S Yoshida
- Liberal and General Education Center, Institute for Promotion of Higher Academic Education, Utsunomiya University, Tochigi, Japan
| |
Collapse
|
3
|
Kondo Y, Achouri NL, Falou HA, Atar L, Aumann T, Baba H, Boretzky K, Caesar C, Calvet D, Chae H, Chiga N, Corsi A, Delaunay F, Delbart A, Deshayes Q, Dombrádi Z, Douma CA, Ekström A, Elekes Z, Forssén C, Gašparić I, Gheller JM, Gibelin J, Gillibert A, Hagen G, Harakeh MN, Hirayama A, Hoffman CR, Holl M, Horvat A, Horváth Á, Hwang JW, Isobe T, Jiang WG, Kahlbow J, Kalantar-Nayestanaki N, Kawase S, Kim S, Kisamori K, Kobayashi T, Körper D, Koyama S, Kuti I, Lapoux V, Lindberg S, Marqués FM, Masuoka S, Mayer J, Miki K, Murakami T, Najafi M, Nakamura T, Nakano K, Nakatsuka N, Nilsson T, Obertelli A, Ogata K, de Oliveira Santos F, Orr NA, Otsu H, Otsuka T, Ozaki T, Panin V, Papenbrock T, Paschalis S, Revel A, Rossi D, Saito AT, Saito TY, Sasano M, Sato H, Satou Y, Scheit H, Schindler F, Schrock P, Shikata M, Shimizu N, Shimizu Y, Simon H, Sohler D, Sorlin O, Stuhl L, Sun ZH, Takeuchi S, Tanaka M, Thoennessen M, Törnqvist H, Togano Y, Tomai T, Tscheuschner J, Tsubota J, Tsunoda N, Uesaka T, Utsuno Y, Vernon I, Wang H, Yang Z, Yasuda M, Yoneda K, Yoshida S. First observation of 28O. Nature 2023; 620:965-970. [PMID: 37648757 PMCID: PMC10630140 DOI: 10.1038/s41586-023-06352-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 06/21/2023] [Indexed: 09/01/2023]
Abstract
Subjecting a physical system to extreme conditions is one of the means often used to obtain a better understanding and deeper insight into its organization and structure. In the case of the atomic nucleus, one such approach is to investigate isotopes that have very different neutron-to-proton (N/Z) ratios than in stable nuclei. Light, neutron-rich isotopes exhibit the most asymmetric N/Z ratios and those lying beyond the limits of binding, which undergo spontaneous neutron emission and exist only as very short-lived resonances (about 10-21 s), provide the most stringent tests of modern nuclear-structure theories. Here we report on the first observation of 28O and 27O through their decay into 24O and four and three neutrons, respectively. The 28O nucleus is of particular interest as, with the Z = 8 and N = 20 magic numbers1,2, it is expected in the standard shell-model picture of nuclear structure to be one of a relatively small number of so-called 'doubly magic' nuclei. Both 27O and 28O were found to exist as narrow, low-lying resonances and their decay energies are compared here to the results of sophisticated theoretical modelling, including a large-scale shell-model calculation and a newly developed statistical approach. In both cases, the underlying nuclear interactions were derived from effective field theories of quantum chromodynamics. Finally, it is shown that the cross-section for the production of 28O from a 29F beam is consistent with it not exhibiting a closed N = 20 shell structure.
Collapse
Affiliation(s)
- Y Kondo
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan.
- RIKEN Nishina Center, Saitama, Japan.
| | - N L Achouri
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
| | - H Al Falou
- Lebanese University, Beirut, Lebanon
- Lebanese-French University of Technology and Applied Sciences, Deddeh, Lebanon
| | - L Atar
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - T Aumann
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz Research Academy Hesse for FAIR, Darmstadt, Germany
| | - H Baba
- RIKEN Nishina Center, Saitama, Japan
| | - K Boretzky
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - C Caesar
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - D Calvet
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - H Chae
- Institute for Basic Science, Daejeon, Republic of Korea
| | - N Chiga
- RIKEN Nishina Center, Saitama, Japan
| | - A Corsi
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - F Delaunay
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
| | - A Delbart
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Q Deshayes
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
| | | | - C A Douma
- ESRIG, University of Groningen, Groningen, The Netherlands
| | - A Ekström
- Institutionen för Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden
| | | | - C Forssén
- Institutionen för Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden
| | - I Gašparić
- RIKEN Nishina Center, Saitama, Japan
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
- Ruđer Bošković Institute, Zagreb, Croatia
| | - J-M Gheller
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - J Gibelin
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
| | - A Gillibert
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - G Hagen
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, USA
| | - M N Harakeh
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- ESRIG, University of Groningen, Groningen, The Netherlands
| | - A Hirayama
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - C R Hoffman
- Physics Division, Argonne National Laboratory, Argonne, IL, USA
| | - M Holl
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - A Horvat
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - Á Horváth
- Eötvös Loránd University, Budapest, Hungary
| | - J W Hwang
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul, Republic of Korea
| | - T Isobe
- RIKEN Nishina Center, Saitama, Japan
| | - W G Jiang
- Institutionen för Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden
| | - J Kahlbow
- RIKEN Nishina Center, Saitama, Japan
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | | | - S Kawase
- Department of Advanced Energy Engineering Science, Kyushu University, Fukuoka, Japan
| | - S Kim
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon, Republic of Korea
- Department of Physics and Astronomy, Seoul National University, Seoul, Republic of Korea
| | | | - T Kobayashi
- Department of Physics, Tohoku University, Miyagi, Japan
| | - D Körper
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - S Koyama
- Department of Physics, The University of Tokyo, Tokyo, Japan
| | - I Kuti
- Atomki, Debrecen, Hungary
| | - V Lapoux
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - S Lindberg
- Institutionen för Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden
| | - F M Marqués
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
| | - S Masuoka
- Center for Nuclear Study, The University of Tokyo, Saitama, Japan
| | - J Mayer
- Institut für Kernphysik, Universität zu Köln, Köln, Germany
| | - K Miki
- Department of Physics, Tohoku University, Miyagi, Japan
| | - T Murakami
- Department of Physics, Kyoto University, Kyoto, Japan
| | - M Najafi
- ESRIG, University of Groningen, Groningen, The Netherlands
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
- RIKEN Nishina Center, Saitama, Japan
| | - K Nakano
- Department of Advanced Energy Engineering Science, Kyushu University, Fukuoka, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kyoto, Japan
| | - T Nilsson
- Institutionen för Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden
| | - A Obertelli
- Irfu, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | - K Ogata
- Department of Physics, Kyushu University, Fukuoka, Japan
- Research Center for Nuclear Physics, Osaka University, Osaka, Japan
- Department of Physics, Osaka City University, Osaka, Japan
| | - F de Oliveira Santos
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - N A Orr
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
| | - H Otsu
- RIKEN Nishina Center, Saitama, Japan
| | - T Otsuka
- RIKEN Nishina Center, Saitama, Japan
- Department of Physics, The University of Tokyo, Tokyo, Japan
| | - T Ozaki
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - V Panin
- RIKEN Nishina Center, Saitama, Japan
| | - T Papenbrock
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, USA
| | - S Paschalis
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - A Revel
- LPC Caen UMR6534, Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, Caen, France
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - D Rossi
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - T Y Saito
- Department of Physics, The University of Tokyo, Tokyo, Japan
| | - M Sasano
- RIKEN Nishina Center, Saitama, Japan
| | - H Sato
- RIKEN Nishina Center, Saitama, Japan
| | - Y Satou
- Department of Physics and Astronomy, Seoul National University, Seoul, Republic of Korea
| | - H Scheit
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - F Schindler
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - P Schrock
- Center for Nuclear Study, The University of Tokyo, Saitama, Japan
| | - M Shikata
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - N Shimizu
- Center for Computational Sciences, University of Tsukuba, Ibaraki, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Saitama, Japan
| | - H Simon
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | | | - O Sorlin
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - L Stuhl
- RIKEN Nishina Center, Saitama, Japan
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon, Republic of Korea
| | - Z H Sun
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, USA
| | - S Takeuchi
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - M Tanaka
- Department of Physics, Osaka University, Osaka, Japan
| | - M Thoennessen
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI, USA
| | - H Törnqvist
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
- Department of Physics, Rikkyo University, Tokyo, Japan
| | - T Tomai
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - J Tscheuschner
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - N Tsunoda
- Center for Nuclear Study, The University of Tokyo, Saitama, Japan
| | - T Uesaka
- RIKEN Nishina Center, Saitama, Japan
| | - Y Utsuno
- Advanced Science Research Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - I Vernon
- Department of Mathematical Sciences, Durham University, Durham, UK
| | - H Wang
- RIKEN Nishina Center, Saitama, Japan
| | - Z Yang
- RIKEN Nishina Center, Saitama, Japan
| | - M Yasuda
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
| | - K Yoneda
- RIKEN Nishina Center, Saitama, Japan
| | - S Yoshida
- Liberal and General Education Center, Institute for Promotion of Higher Academic Education, Utsunomiya University, Tochigi, Japan
| |
Collapse
|
4
|
Barney J, Estee J, Lynch WG, Isobe T, Jhang G, Kurata-Nishimura M, McIntosh AB, Murakami T, Shane R, Tangwancharoen S, Tsang MB, Cerizza G, Kaneko M, Lee JW, Tsang CY, Wang R, Anderson C, Baba H, Chajecki Z, Famiano M, Hodges-Showalter R, Hong B, Kobayashi T, Lasko P, Łukasik J, Nakatsuka N, Olsen R, Otsu H, Pawłowski P, Pelczar K, Sakurai H, Santamaria C, Setiawan H, Taketani A, Winkelbauer JR, Xiao Z, Yennello SJ, Yurkon J, Zhang Y. The SπRIT time projection chamber. Rev Sci Instrum 2021; 92:063302. [PMID: 34243507 DOI: 10.1063/5.0041191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 05/23/2021] [Indexed: 06/13/2023]
Abstract
The Superconducting Analyzer for MUlti-particles from RAdioIsotope (SAMURAI) Pion-Reconstruction and Ion-Tracker Time Projection Chamber (SπRIT TPC) was designed to enable measurements of heavy ion collisions with the SAMURAI spectrometer at the RIKEN radioactive isotope beam factory and provides constraints on the equation of state of neutron-rich nuclear matter. The SπRIT TPC has a 50.5 cm drift length and an 86.4 × 134.4 cm2 pad plane with 12 096 pads that are equipped with the generic electronics for TPCs. The SπRIT TPC allows for an excellent reconstruction of particles and provides isotopic resolution for pions and other light charged particles across a wide range of energy losses and momenta. The details of the SπRIT TPC are presented, along with discussion of the TPC performance based on cosmic rays and charged particles emitted in heavy ion collisions.
Collapse
Affiliation(s)
- J Barney
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - J Estee
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - W G Lynch
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - G Jhang
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | | | - A B McIntosh
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
| | - T Murakami
- Department of Physics, Kyoto University, Kita-shirakawa, Kyoto 606-8502, Japan
| | - R Shane
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - S Tangwancharoen
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - M B Tsang
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - G Cerizza
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - M Kaneko
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J W Lee
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - C Y Tsang
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - R Wang
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - C Anderson
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Z Chajecki
- Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008, USA
| | - M Famiano
- Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008, USA
| | - R Hodges-Showalter
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - B Hong
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - T Kobayashi
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - P Lasko
- Institute of Nuclear Physics PAN, ul. Radzikowskiego 152, 31-342 Kraków, Poland
| | - J Łukasik
- Institute of Nuclear Physics PAN, ul. Radzikowskiego 152, 31-342 Kraków, Poland
| | - N Nakatsuka
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - R Olsen
- Gran Sasso National Laboratory-INFN, Via G. Acitelli 22, 67100 Assergi, L'Aquila AQ, Italy
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - P Pawłowski
- Institute of Nuclear Physics PAN, ul. Radzikowskiego 152, 31-342 Kraków, Poland
| | - K Pelczar
- Gran Sasso National Laboratory-INFN, Via G. Acitelli 22, 67100 Assergi, L'Aquila AQ, Italy
| | - H Sakurai
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Santamaria
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - H Setiawan
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - A Taketani
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J R Winkelbauer
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - Z Xiao
- Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China
| | - S J Yennello
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
| | - J Yurkon
- National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824, USA
| | - Y Zhang
- Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China
| |
Collapse
|
5
|
Estee J, Lynch WG, Tsang CY, Barney J, Jhang G, Tsang MB, Wang R, Kaneko M, Lee JW, Isobe T, Kurata-Nishimura M, Murakami T, Ahn DS, Atar L, Aumann T, Baba H, Boretzky K, Brzychczyk J, Cerizza G, Chiga N, Fukuda N, Gasparic I, Hong B, Horvat A, Ieki K, Inabe N, Kim YJ, Kobayashi T, Kondo Y, Lasko P, Lee HS, Leifels Y, Łukasik J, Manfredi J, McIntosh AB, Morfouace P, Nakamura T, Nakatsuka N, Nishimura S, Otsu H, Pawłowski P, Pelczar K, Rossi D, Sakurai H, Santamaria C, Sato H, Scheit H, Shane R, Shimizu Y, Simon H, Snoch A, Sochocka A, Sumikama T, Suzuki H, Suzuki D, Takeda H, Tangwancharoen S, Toernqvist H, Togano Y, Xiao ZG, Yennello SJ, Zhang Y, Cozma MD. Probing the Symmetry Energy with the Spectral Pion Ratio. Phys Rev Lett 2021; 126:162701. [PMID: 33961456 DOI: 10.1103/physrevlett.126.162701] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/08/2021] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
Many neutron star properties, such as the proton fraction, reflect the symmetry energy contributions to the equation of state that dominate when neutron and proton densities differ strongly. To constrain these contributions at suprasaturation densities, we measure the spectra of charged pions produced by colliding rare isotope tin (Sn) beams with isotopically enriched Sn targets. Using ratios of the charged pion spectra measured at high transverse momenta, we deduce the slope of the symmetry energy to be 42<L<117 MeV. This value is slightly lower but consistent with the L values deduced from a recent measurement of the neutron skin thickness of ^{208}Pb.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - M D Cozma
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
- IFIN-HH, Reactorului 30, 077125 Măgurele-Bucharest, Romania
| |
Collapse
|
6
|
Yang ZH, Kubota Y, Corsi A, Yoshida K, Sun XX, Li JG, Kimura M, Michel N, Ogata K, Yuan CX, Yuan Q, Authelet G, Baba H, Caesar C, Calvet D, Delbart A, Dozono M, Feng J, Flavigny F, Gheller JM, Gibelin J, Giganon A, Gillibert A, Hasegawa K, Isobe T, Kanaya Y, Kawakami S, Kim D, Kiyokawa Y, Kobayashi M, Kobayashi N, Kobayashi T, Kondo Y, Korkulu Z, Koyama S, Lapoux V, Maeda Y, Marqués FM, Motobayashi T, Miyazaki T, Nakamura T, Nakatsuka N, Nishio Y, Obertelli A, Ohkura A, Orr NA, Ota S, Otsu H, Ozaki T, Panin V, Paschalis S, Pollacco EC, Reichert S, Roussé JY, Saito AT, Sakaguchi S, Sako M, Santamaria C, Sasano M, Sato H, Shikata M, Shimizu Y, Shindo Y, Stuhl L, Sumikama T, Sun YL, Tabata M, Togano Y, Tsubota J, Xu FR, Yasuda J, Yoneda K, Zenihiro J, Zhou SG, Zuo W, Uesaka T. Quasifree Neutron Knockout Reaction Reveals a Small s-Orbital Component in the Borromean Nucleus ^{17}B. Phys Rev Lett 2021; 126:082501. [PMID: 33709737 DOI: 10.1103/physrevlett.126.082501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/07/2020] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
A kinematically complete quasifree (p,pn) experiment in inverse kinematics was performed to study the structure of the Borromean nucleus ^{17}B, which had long been considered to have a neutron halo. By analyzing the momentum distributions and exclusive cross sections, we obtained the spectroscopic factors for 1s_{1/2} and 0d_{5/2} orbitals, and a surprisingly small percentage of 9(2)% was determined for 1s_{1/2}. Our finding of such a small 1s_{1/2} component and the halo features reported in prior experiments can be explained by the deformed relativistic Hartree-Bogoliubov theory in continuum, revealing a definite but not dominant neutron halo in ^{17}B. The present work gives the smallest s- or p-orbital component among known nuclei exhibiting halo features and implies that the dominant occupation of s or p orbitals is not a prerequisite for the occurrence of a neutron halo.
Collapse
Affiliation(s)
- Z H Yang
- Research Center for Nuclear Physics (RCNP), Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kubota
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - A Corsi
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - K Yoshida
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - X-X Sun
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J G Li
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - M Kimura
- Research Center for Nuclear Physics (RCNP), Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
- Nuclear Reaction Data Centre, Hokkaido University, Sapporo 060-0810, Japan
| | - N Michel
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - K Ogata
- Research Center for Nuclear Physics (RCNP), Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Department of Physics, Osaka City University, Osaka 558-8585, Japan
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai, 519082, Guangdong, China
| | - Q Yuan
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - G Authelet
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Caesar
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - D Calvet
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Delbart
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Dozono
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - J Feng
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - F Flavigny
- IPN Orsay, Université Paris Sud, IN2P3-CNRS, F-91406 Orsay Cedex, France
| | - J-M Gheller
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Gibelin
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - A Giganon
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Gillibert
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - K Hasegawa
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kanaya
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - S Kawakami
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - D Kim
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Republic of Korea
| | - Y Kiyokawa
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - M Kobayashi
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - N Kobayashi
- Department of Physics, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Z Korkulu
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Republic of Korea
- Institute for Nuclear Research, Hungarian Academy of Sciences (MTA Atomki), P.O. Box 51, H-4001 Debrecen, Hungary
| | - S Koyama
- Department of Physics, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - V Lapoux
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Y Maeda
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - F M Marqués
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Miyazaki
- Department of Physics, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502, Japan
| | - Y Nishio
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - A Obertelli
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Ohkura
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - N A Orr
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - S Ota
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Ozaki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - V Panin
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Paschalis
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - E C Pollacco
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Reichert
- Physik Department, Technische Universität München, D-85748 Garching, Germany
| | - J-Y Roussé
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Sakaguchi
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - M Sako
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Santamaria
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Sasano
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Shikata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Shindo
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - L Stuhl
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Republic of Korea
| | - T Sumikama
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - Y L Sun
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Tabata
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
- Department of Physics, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - F R Xu
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - J Yasuda
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Zenihiro
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S-G Zhou
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - W Zuo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - T Uesaka
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Cluster for Pioneering Research, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| |
Collapse
|
7
|
Kubota Y, Corsi A, Authelet G, Baba H, Caesar C, Calvet D, Delbart A, Dozono M, Feng J, Flavigny F, Gheller JM, Gibelin J, Giganon A, Gillibert A, Hasegawa K, Isobe T, Kanaya Y, Kawakami S, Kim D, Kikuchi Y, Kiyokawa Y, Kobayashi M, Kobayashi N, Kobayashi T, Kondo Y, Korkulu Z, Koyama S, Lapoux V, Maeda Y, Marqués FM, Motobayashi T, Miyazaki T, Nakamura T, Nakatsuka N, Nishio Y, Obertelli A, Ogata K, Ohkura A, Orr NA, Ota S, Otsu H, Ozaki T, Panin V, Paschalis S, Pollacco EC, Reichert S, Roussé JY, Saito AT, Sakaguchi S, Sako M, Santamaria C, Sasano M, Sato H, Shikata M, Shimizu Y, Shindo Y, Stuhl L, Sumikama T, Sun YL, Tabata M, Togano Y, Tsubota J, Yang ZH, Yasuda J, Yoneda K, Zenihiro J, Uesaka T. Surface Localization of the Dineutron in ^{11}Li. Phys Rev Lett 2020; 125:252501. [PMID: 33416401 DOI: 10.1103/physrevlett.125.252501] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/28/2020] [Accepted: 10/08/2020] [Indexed: 06/12/2023]
Abstract
The formation of a dineutron in the ^{11}Li nucleus is found to be localized to the surface region. The experiment measured the intrinsic momentum of the struck neutron in ^{11}Li via the (p,pn) knockout reaction at 246 MeV/nucleon. The correlation angle between the two neutrons is, for the first time, measured as a function of the intrinsic neutron momentum. A comparison with reaction calculations reveals the localization of the dineutron at r∼3.6 fm. The results also support the density dependence of dineutron formation as deduced from Hartree-Fock-Bogoliubov calculations for nuclear matter.
Collapse
Affiliation(s)
- Y Kubota
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - A Corsi
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - G Authelet
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Caesar
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - D Calvet
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Delbart
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Dozono
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - J Feng
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - F Flavigny
- IPN Orsay, Université Paris Sud, IN2P3-CNRS, F-91406 Orsay Cedex, France
| | - J-M Gheller
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Gibelin
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - A Giganon
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Gillibert
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - K Hasegawa
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kanaya
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - S Kawakami
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - D Kim
- Center for Exotic Nuclear Studies, Institute for Basic Science (IBS), Daejeon 34126, Korea
| | - Y Kikuchi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Tokuyama College, National Institute of Technology, Yamaguchi 745-8585, Japan
- Department of Physics, Osaka City University, Osaka 558-8585, Japan
| | - Y Kiyokawa
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - M Kobayashi
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - N Kobayashi
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Z Korkulu
- Center for Exotic Nuclear Studies, Institute for Basic Science (IBS), Daejeon 34126, Korea
- Institute for Nuclear Research, Hungarian Academy of Sciences (MTA Atomki), P.O. Box 51, H-4001 Debrecen, Hungary
| | - S Koyama
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - V Lapoux
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Y Maeda
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - F M Marqués
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Miyazaki
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502, Japan
| | - Y Nishio
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - A Obertelli
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - K Ogata
- Department of Physics, Osaka City University, Osaka 558-8585, Japan
- Research Center for Nuclear Physics, Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - A Ohkura
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - N A Orr
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - S Ota
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Ozaki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - V Panin
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Paschalis
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - E C Pollacco
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Reichert
- Physik Department, Technische Universität München, D-85748 Garching, Germany
| | - J-Y Roussé
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Sakaguchi
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - M Sako
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Santamaria
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Sasano
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Shikata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Shindo
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - L Stuhl
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Exotic Nuclear Studies, Institute for Basic Science (IBS), Daejeon 34126, Korea
| | - T Sumikama
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - Y L Sun
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Tabata
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Z H Yang
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Yasuda
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Zenihiro
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Uesaka
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Cluster for Pioneering Research, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| |
Collapse
|
8
|
Frotscher A, Gómez-Ramos M, Obertelli A, Doornenbal P, Authelet G, Baba H, Calvet D, Château F, Chen S, Corsi A, Delbart A, Gheller JM, Giganon A, Gillibert A, Isobe T, Lapoux V, Matsushita M, Momiyama S, Motobayashi T, Niikura M, Otsu H, Paul N, Péron C, Peyaud A, Pollacco EC, Roussé JY, Sakurai H, Santamaria C, Sasano M, Shiga Y, Shimizu N, Steppenbeck D, Takeuchi S, Taniuchi R, Uesaka T, Wang H, Yoneda K, Ando T, Arici T, Blazhev A, Browne F, Bruce AM, Carroll R, Chung LX, Cortés ML, Dewald M, Ding B, Dombradi Z, Flavigny F, Franchoo S, Giacoppo F, Górska M, Gottardo A, Hadyńska-Klęk K, Korkulu Z, Koyama S, Kubota Y, Jungclaus A, Lee J, Lettmann M, Linh BD, Liu J, Liu Z, Lizarazo C, Louchart C, Lozeva R, Matsui K, Miyazaki T, Moschner K, Nagamine S, Nakatsuka N, Nita C, Nishimura S, Nobs CR, Olivier L, Ota S, Patel Z, Podolyák Z, Rudigier M, Sahin E, Saito TY, Shand C, Söderström PA, Stefan IG, Sumikama T, Suzuki D, Orlandi R, Vaquero V, Vajta Z, Werner V, Wimmer K, Wu J, Xu Z. Sequential Nature of (p,3p) Two-Proton Knockout from Neutron-Rich Nuclei. Phys Rev Lett 2020; 125:012501. [PMID: 32678621 DOI: 10.1103/physrevlett.125.012501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/27/2020] [Accepted: 06/01/2020] [Indexed: 06/11/2023]
Abstract
Twenty-one two-proton knockout (p,3p) cross sections were measured from neutron-rich nuclei at ∼250 MeV/nucleon in inverse kinematics. The angular distribution of the three emitted protons was determined for the first time, demonstrating that the (p,3p) kinematics are consistent with two sequential proton-proton collisions within the projectile nucleus. Ratios of (p,3p) over (p,2p) inclusive cross sections follow the trend of other many-nucleon removal reactions, further reinforcing the sequential nature of (p,3p) in neutron-rich nuclei.
Collapse
Affiliation(s)
- A Frotscher
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - M Gómez-Ramos
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - A Obertelli
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - P Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - G Authelet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Calvet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - F Château
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Chen
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People's Republic of China
| | - A Corsi
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Delbart
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J-M Gheller
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Giganon
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Gillibert
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - T Isobe
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - V Lapoux
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Matsushita
- Center for Nuclear Study, The University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
| | - S Momiyama
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Niikura
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - H Otsu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - N Paul
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - C Péron
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Peyaud
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - E C Pollacco
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J-Y Roussé
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Sakurai
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - C Santamaria
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Sasano
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Y Shiga
- Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 172-8501, Japan
| | - N Shimizu
- Center for Nuclear Study, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - D Steppenbeck
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Takeuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - R Taniuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Uesaka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Wang
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Yoneda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Ando
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Arici
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Justus-Liebig-Universität Giessen, D-35392 Giessen, Germany
| | - A Blazhev
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - F Browne
- School of Computing Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - A M Bruce
- School of Computing Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - R Carroll
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - L X Chung
- Institute for Nuclear Science & Technology, VINATOM, P.O. Box 5T-160, Nghia Do, Hanoi, Vietnam
| | - M L Cortés
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - M Dewald
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - B Ding
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Zs Dombradi
- MTA Atomki, P.O. Box 51, Debrecen H-4001, Hungary
| | - F Flavigny
- Present affiliation: LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14050 Caen Cedex 04, France
| | - S Franchoo
- Present affiliation: LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14050 Caen Cedex 04, France
| | - F Giacoppo
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - M Górska
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - A Gottardo
- Present affiliation: LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14050 Caen Cedex 04, France
| | - K Hadyńska-Klęk
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - Z Korkulu
- MTA Atomki, P.O. Box 51, Debrecen H-4001, Hungary
| | - S Koyama
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - Y Kubota
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, The University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
| | - J Lee
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - M Lettmann
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - B D Linh
- Institute for Nuclear Science & Technology, VINATOM, P.O. Box 5T-160, Nghia Do, Hanoi, Vietnam
| | - J Liu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - Z Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - C Lizarazo
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - C Louchart
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - R Lozeva
- IPHC, CNRS/IN2P3, Université de Strasbourg, F-67037 Strasbourg, France
- CSNSM, CNRS/IN2P3, Université Paris-Sud, F-91405 Orsay Campus, France
| | - K Matsui
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Miyazaki
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - K Moschner
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - S Nagamine
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - N Nakatsuka
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - C Nita
- Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), RO-077125 Bucharest, Romania
| | - S Nishimura
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - C R Nobs
- School of Computing Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - L Olivier
- Present affiliation: LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14050 Caen Cedex 04, France
| | - S Ota
- Center for Nuclear Study, The University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
| | - Z Patel
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Zs Podolyák
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - M Rudigier
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - E Sahin
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - T Y Saito
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - C Shand
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - P-A Söderström
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Extreme Light Infrastructure-Nuclear Physics (ELI-NP), 077125 Bucharest-Măgurele, Romania
| | - I G Stefan
- Present affiliation: LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14050 Caen Cedex 04, France
| | - T Sumikama
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - D Suzuki
- Present affiliation: LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14050 Caen Cedex 04, France
| | - R Orlandi
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - V Vaquero
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
| | - Zs Vajta
- MTA Atomki, P.O. Box 51, Debrecen H-4001, Hungary
| | - V Werner
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - K Wimmer
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - J Wu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People's Republic of China
| | - Z Xu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| |
Collapse
|
9
|
Lizarazo C, Söderström PA, Werner V, Pietralla N, Walker PM, Dong GX, Xu FR, Rodríguez TR, Browne F, Doornenbal P, Nishimura S, Niţă CR, Obertelli A, Ando T, Arici T, Authelet G, Baba H, Blazhev A, Bruce AM, Calvet D, Caroll RJ, Château F, Chen S, Chung LX, Corsi A, Cortés ML, Delbart A, Dewald M, Ding B, Flavigny F, Franchoo S, Gerl J, Gheller JM, Giganon A, Gillibert A, Górska M, Gottardo A, Kojouharov I, Kurz N, Lapoux V, Lee J, Lettmann M, Linh BD, Liu JJ, Liu Z, Momiyama S, Moschner K, Motobayashi T, Nagamine S, Nakatsuka N, Niikura M, Nobs C, Olivier L, Patel Z, Paul N, Podolyák Z, Roussé JY, Rudigier M, Saito TY, Sakurai H, Santamaria C, Schaffner H, Shand C, Stefan I, Steppenbeck D, Taniuchi R, Uesaka T, Vaquero V, Wimmer K, Xu Z. Metastable States of ^{92,94}Se: Identification of an Oblate K Isomer of ^{94}Se and the Ground-State Shape Transition between N=58 and 60. Phys Rev Lett 2020; 124:222501. [PMID: 32567911 DOI: 10.1103/physrevlett.124.222501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/17/2020] [Accepted: 05/12/2020] [Indexed: 06/11/2023]
Abstract
Here we present new information on the shape evolution of the very neutron-rich ^{92,94}Se nuclei from an isomer-decay spectroscopy experiment at the Radioactive Isotope Beam Factory at RIKEN. High-resolution germanium detectors were used to identify delayed γ rays emitted following the decay of their isomers. New transitions are reported extending the previously known level schemes. The isomeric levels are interpreted as originating from high-K quasineutron states with an oblate deformation of β∼0.25, with the high-K state in ^{94}Se being metastable and K hindered. Following this, ^{94}Se is the lowest-mass neutron-rich nucleus known to date with such a substantial K hindrance. Furthermore, it is the first observation of an oblate K isomer in a deformed nucleus. This opens up the possibility for a new region of K isomers at low Z and at oblate deformation, involving the same neutron orbitals as the prolate orbitals within the classic Z∼72 deformed hafnium region. From an interpretation of the level scheme guided by theoretical calculations, an oblate deformation is also suggested for the ^{94}Se_{60} ground-state band.
Collapse
Affiliation(s)
- C Lizarazo
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - P-A Söderström
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Extreme Light Infrastructure-Nuclear Physics (ELI-NP)/Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), Strada Reactorului 30, 077125 Bucharest-Măgurele, Romania
| | - V Werner
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - N Pietralla
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - P M Walker
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - G X Dong
- School of Science, Huzhou University, Huzhou 313000, China
| | - F R Xu
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People's Republic of China
| | - T R Rodríguez
- Departamento de Física Teórica, Universidad Autónoma de Madrid, 28049, Spain
| | - F Browne
- School of Computing Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - P Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Nishimura
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - C R Niţă
- Department of Nuclear Physics (DFN)/Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), Strada Reactorului 30, 077125 Bucharest-Măgurele, Romania
| | - A Obertelli
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - T Ando
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Arici
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - G Authelet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A Blazhev
- Institut für Kernphysik, Universität zu Köln, D-50937 Cologne, Germany
| | - A M Bruce
- School of Computing Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - D Calvet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - R J Caroll
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - F Château
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Chen
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People's Republic of China
| | - L X Chung
- Institute for Nuclear Science and Technology, VINATOM, P.O. Box 5T-160, Nghia Do, Hanoi, Vietnam
| | - A Corsi
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M L Cortés
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A Delbart
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Dewald
- Institut für Kernphysik, Universität zu Köln, D-50937 Cologne, Germany
| | - B Ding
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - F Flavigny
- Institut de Physique Nucléaire Orsay, IN2P3-CNRS, 91406 Orsay Cedex, France
| | - S Franchoo
- Institut de Physique Nucléaire Orsay, IN2P3-CNRS, 91406 Orsay Cedex, France
| | - J Gerl
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - J-M Gheller
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Giganon
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Gillibert
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Górska
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Gottardo
- Institut de Physique Nucléaire Orsay, IN2P3-CNRS, 91406 Orsay Cedex, France
| | - I Kojouharov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - N Kurz
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - V Lapoux
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Lee
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - M Lettmann
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - B D Linh
- Institute for Nuclear Science and Technology, VINATOM, P.O. Box 5T-160, Nghia Do, Hanoi, Vietnam
| | - J J Liu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - Z Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S Momiyama
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - K Moschner
- Institut für Kernphysik, Universität zu Köln, D-50937 Cologne, Germany
| | - T Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Nagamine
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - N Nakatsuka
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - M Niikura
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - C Nobs
- School of Computing Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - L Olivier
- Institut de Physique Nucléaire Orsay, IN2P3-CNRS, 91406 Orsay Cedex, France
| | - Z Patel
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - N Paul
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Zs Podolyák
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - J-Y Roussé
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Rudigier
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - T Y Saito
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - H Sakurai
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - C Santamaria
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Schaffner
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - C Shand
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - I Stefan
- Institut de Physique Nucléaire Orsay, IN2P3-CNRS, 91406 Orsay Cedex, France
| | - D Steppenbeck
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - R Taniuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Uesaka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - V Vaquero
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
| | - K Wimmer
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - Z Xu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| |
Collapse
|
10
|
Cook KJ, Nakamura T, Kondo Y, Hagino K, Ogata K, Saito AT, Achouri NL, Aumann T, Baba H, Delaunay F, Deshayes Q, Doornenbal P, Fukuda N, Gibelin J, Hwang JW, Inabe N, Isobe T, Kameda D, Kanno D, Kim S, Kobayashi N, Kobayashi T, Kubo T, Leblond S, Lee J, Marqués FM, Minakata R, Motobayashi T, Muto K, Murakami T, Murai D, Nakashima T, Nakatsuka N, Navin A, Nishi S, Ogoshi S, Orr NA, Otsu H, Sato H, Satou Y, Shimizu Y, Suzuki H, Takahashi K, Takeda H, Takeuchi S, Tanaka R, Togano Y, Tsubota J, Tuff AG, Vandebrouck M, Yoneda K. Halo Structure of the Neutron-Dripline Nucleus ^{19}B. Phys Rev Lett 2020; 124:212503. [PMID: 32530691 DOI: 10.1103/physrevlett.124.212503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/24/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
The heaviest bound isotope of boron ^{19}B has been investigated using exclusive measurements of its Coulomb dissociation, into ^{17}B and two neutrons, in collisions with Pb at 220 MeV/nucleon. Enhanced electric dipole (E1) strength is observed just above the two-neutron decay threshold with an integrated E1 strength of B(E1)=1.64±0.06(stat)±0.12(sys) e^{2} fm^{2} for relative energies below 6 MeV. This feature, known as a soft E1 excitation, provides the first firm evidence that ^{19}B has a prominent two-neutron halo. Three-body calculations that reproduce the energy spectrum indicate that the valence neutrons have a significant s-wave configuration and exhibit a dineutronlike correlation.
Collapse
Affiliation(s)
- K J Cook
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - K Hagino
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - K Ogata
- Research Center for Nuclear Physics, Osaka University, Ibaraki 567-0047, Japan
- Department of Physics, Osaka City University, Osaka 558-8585, Japan
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N L Achouri
- LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France
| | - T Aumann
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - F Delaunay
- LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France
| | - Q Deshayes
- LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France
| | - P Doornenbal
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - N Fukuda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Gibelin
- LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France
| | - J W Hwang
- Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea
| | - N Inabe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Kameda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Kanno
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Kim
- Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea
| | - N Kobayashi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Aramaki Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - T Kubo
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Leblond
- LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France
| | - J Lee
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - F M Marqués
- LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France
| | - R Minakata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - K Muto
- Department of Physics, Tohoku University, Aramaki Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - T Murakami
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - D Murai
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - T Nakashima
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - A Navin
- GANIL, CEA/DRF-CNRS/IN2P3, 14076 Caen Cedex 05, France
| | - S Nishi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Ogoshi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N A Orr
- LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Satou
- Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Suzuki
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - K Takahashi
- Department of Physics, Tohoku University, Aramaki Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - H Takeda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Takeuchi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - R Tanaka
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Togano
- ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - A G Tuff
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
| | - M Vandebrouck
- IPN Orsay, Université Paris Sud, IN2P3-CNRS, 91406 Orsay Cedex, France
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| |
Collapse
|
11
|
Revel A, Sorlin O, Marqués FM, Kondo Y, Kahlbow J, Nakamura T, Orr NA, Nowacki F, Tostevin JA, Yuan CX, Achouri NL, Al Falou H, Atar L, Aumann T, Baba H, Boretzky K, Caesar C, Calvet D, Chae H, Chiga N, Corsi A, Crawford HL, Delaunay F, Delbart A, Deshayes Q, Dombrádi Z, Douma CA, Elekes Z, Fallon P, Gašparić I, Gheller JM, Gibelin J, Gillibert A, Harakeh MN, He W, Hirayama A, Hoffman CR, Holl M, Horvat A, Horváth Á, Hwang JW, Isobe T, Kalantar-Nayestanaki N, Kawase S, Kim S, Kisamori K, Kobayashi T, Körper D, Koyama S, Kuti I, Lapoux V, Lindberg S, Masuoka S, Mayer J, Miki K, Murakami T, Najafi M, Nakano K, Nakatsuka N, Nilsson T, Obertelli A, de Oliveira Santos F, Otsu H, Ozaki T, Panin V, Paschalis S, Rossi D, Saito AT, Saito T, Sasano M, Sato H, Satou Y, Scheit H, Schindler F, Schrock P, Shikata M, Shimizu Y, Simon H, Sohler D, Stuhl L, Takeuchi S, Tanaka M, Thoennessen M, Törnqvist H, Togano Y, Tomai T, Tscheuschner J, Tsubota J, Uesaka T, Yang Z, Yasuda M, Yoneda K. Extending the Southern Shore of the Island of Inversion to ^{28}F. Phys Rev Lett 2020; 124:152502. [PMID: 32357034 DOI: 10.1103/physrevlett.124.152502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 06/11/2023]
Abstract
Detailed spectroscopy of the neutron-unbound nucleus ^{28}F has been performed for the first time following proton/neutron removal from ^{29}Ne/^{29}F beams at energies around 230 MeV/nucleon. The invariant-mass spectra were reconstructed for both the ^{27}F^{(*)}+n and ^{26}F^{(*)}+2n coincidences and revealed a series of well-defined resonances. A near-threshold state was observed in both reactions and is identified as the ^{28}F ground state, with S_{n}(^{28}F)=-199(6) keV, while analysis of the 2n decay channel allowed a considerably improved S_{n}(^{27}F)=1620(60) keV to be deduced. Comparison with shell-model predictions and eikonal-model reaction calculations have allowed spin-parity assignments to be proposed for some of the lower-lying levels of ^{28}F. Importantly, in the case of the ground state, the reconstructed ^{27}F+n momentum distribution following neutron removal from ^{29}F indicates that it arises mainly from the 1p_{3/2} neutron intruder configuration. This demonstrates that the island of inversion around N=20 includes ^{28}F, and most probably ^{29}F, and suggests that ^{28}O is not doubly magic.
Collapse
Affiliation(s)
- A Revel
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
| | - O Sorlin
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
| | - F M Marqués
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - J Kahlbow
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N A Orr
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France
| | - F Nowacki
- Université de Strasbourg, IPHC, 23 rue de Loess 67037 Strasbourg, France
- CNRS, UMR7178, 67037 Strasbourg, France
| | - J A Tostevin
- Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - N L Achouri
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France
| | | | - L Atar
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - T Aumann
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - K Boretzky
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - C Caesar
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - D Calvet
- Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - H Chae
- IBS, 55, Expo-ro, Yuseong-gu, Daejeon 34126, Korea
| | - N Chiga
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - A Corsi
- Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - H L Crawford
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - F Delaunay
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France
| | - A Delbart
- Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - Q Deshayes
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France
| | - Z Dombrádi
- Institute of Nuclear Research, Atomki, 4001 Debrecen, Hungary
| | - C A Douma
- KVI-CART, University of Groningen, Zernikelaan 25, 9747 AA Groningen, The Netherlands
| | - Z Elekes
- Institute of Nuclear Research, Atomki, 4001 Debrecen, Hungary
| | - P Fallon
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - I Gašparić
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Ruđer Bošković Institute, HR-10002 Zagreb, Croatia
| | - J-M Gheller
- Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - J Gibelin
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 CAEN Cedex, France
| | - A Gillibert
- Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - M N Harakeh
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
- KVI-CART, University of Groningen, Zernikelaan 25, 9747 AA Groningen, The Netherlands
| | - W He
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - A Hirayama
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - C R Hoffman
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - M Holl
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - A Horvat
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - Á Horváth
- Eötvös Loránd University, Pázmány Péter Sétány 1/A, H-1117 Budapest, Hungary
| | - J W Hwang
- Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | | | - S Kawase
- Department of Advanced Energy Engineering Science, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
| | - S Kim
- Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - K Kisamori
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - D Körper
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - S Koyama
- Unversity of Tokyo, Tokyo 1130033, Japan
| | - I Kuti
- Institute of Nuclear Research, Atomki, 4001 Debrecen, Hungary
| | - V Lapoux
- Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - S Lindberg
- Institutionen för Fysik, Chalmers Tekniska Högskola, 412 96 Göteborg, Sweden
| | - S Masuoka
- Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - J Mayer
- Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
| | - K Miki
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - T Murakami
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - M Najafi
- KVI-CART, University of Groningen, Zernikelaan 25, 9747 AA Groningen, The Netherlands
| | - K Nakano
- Department of Advanced Energy Engineering Science, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Nilsson
- Institutionen för Fysik, Chalmers Tekniska Högskola, 412 96 Göteborg, Sweden
| | - A Obertelli
- Irfu, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - F de Oliveira Santos
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Ozaki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - V Panin
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Paschalis
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - D Rossi
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Saito
- Unversity of Tokyo, Tokyo 1130033, Japan
| | - M Sasano
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Satou
- Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - H Scheit
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - F Schindler
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - P Schrock
- Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Shikata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Simon
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany
| | - D Sohler
- Institute of Nuclear Research, Atomki, 4001 Debrecen, Hungary
| | - L Stuhl
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Takeuchi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - M Tanaka
- Department of Physics, Osaka University, Osaka 560-0043, Japan
| | - M Thoennessen
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - H Törnqvist
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Tomai
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - J Tscheuschner
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Uesaka
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Z Yang
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Yasuda
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| |
Collapse
|
12
|
Vaquero V, Jungclaus A, Aumann T, Tscheuschner J, Litvinova EV, Tostevin JA, Baba H, Ahn DS, Avigo R, Boretzky K, Bracco A, Caesar C, Camera F, Chen S, Derya V, Doornenbal P, Endres J, Fukuda N, Garg U, Giaz A, Harakeh MN, Heil M, Horvat A, Ieki K, Imai N, Inabe N, Kalantar-Nayestanaki N, Kobayashi N, Kondo Y, Koyama S, Kubo T, Martel I, Matsushita M, Million B, Motobayashi T, Nakamura T, Nakatsuka N, Nishimura M, Nishimura S, Ota S, Otsu H, Ozaki T, Petri M, Reifarth R, Rodríguez-Sánchez JL, Rossi D, Saito AT, Sakurai H, Savran D, Scheit H, Schindler F, Schrock P, Semmler D, Shiga Y, Shikata M, Shimizu Y, Simon H, Steppenbeck D, Suzuki H, Sumikama T, Symochko D, Syndikus I, Takeda H, Takeuchi S, Taniuchi R, Togano Y, Tsubota J, Wang H, Wieland O, Yoneda K, Zenihiro J, Zilges A. Fragmentation of Single-Particle Strength around the Doubly Magic Nucleus ^{132}Sn and the Position of the 0f_{5/2} Proton-Hole State in ^{131}In. Phys Rev Lett 2020; 124:022501. [PMID: 32004026 DOI: 10.1103/physrevlett.124.022501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 11/29/2019] [Indexed: 06/10/2023]
Abstract
Spectroscopic factors of neutron-hole and proton-hole states in ^{131}Sn and ^{131}In, respectively, were measured using one-nucleon removal reactions from doubly magic ^{132}Sn at relativistic energies. For ^{131}In, a 2910(50)-keV γ ray was observed for the first time and tentatively assigned to a decay from a 5/2^{-} state at 3275(50) keV to the known 1/2^{-} level at 365 keV. The spectroscopic factors determined for this new excited state and three other single-hole states provide first evidence for a strong fragmentation of single-hole strength in ^{131}Sn and ^{131}In. The experimental results are compared to theoretical calculations based on the relativistic particle-vibration coupling model and to experimental information for single-hole states in the stable doubly magic nucleus ^{208}Pb.
Collapse
Affiliation(s)
- V Vaquero
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
| | - T Aumann
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - J Tscheuschner
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - E V Litvinova
- Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008-5252, USA
| | - J A Tostevin
- Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
| | - H Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - D S Ahn
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - R Avigo
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - K Boretzky
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - A Bracco
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - C Caesar
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - F Camera
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - S Chen
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - V Derya
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - P Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - J Endres
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - N Fukuda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - U Garg
- Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - A Giaz
- Dipartimento di Fisica dell'Università degli Studi di Milano, I-20133 Milano, Italy
| | - M N Harakeh
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- KVI-CART, Zernikelaan 25, NL-9747 AA Groningen, The Netherlands
| | - M Heil
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - A Horvat
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - K Ieki
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - N Imai
- Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan
| | - N Inabe
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | | | - N Kobayashi
- Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - S Koyama
- Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan
| | - T Kubo
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - I Martel
- Departamento de Fsica Aplicada, Universidad de Huelva, E-21071 Huelva, Spain
| | - M Matsushita
- Center for Nuclear Study, The University of Tokyo, Tokyo 113-0033, Japan
| | - B Million
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - T Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - M Nishimura
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - S Nishimura
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - S Ota
- Center for Nuclear Study, The University of Tokyo, Tokyo 113-0033, Japan
| | - H Otsu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - T Ozaki
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - M Petri
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - R Reifarth
- Institut für Kernphysik, Goethe University Frankfurt, D-60438 Frankfurt, Germany
| | - J L Rodríguez-Sánchez
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- Universidad de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - D Rossi
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - H Sakurai
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
- Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan
| | - D Savran
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - H Scheit
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - F Schindler
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - P Schrock
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - D Semmler
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - Y Shiga
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - M Shikata
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Y Shimizu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - H Simon
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - D Steppenbeck
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - H Suzuki
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - T Sumikama
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - D Symochko
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - I Syndikus
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - H Takeda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - S Takeuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - R Taniuchi
- Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - H Wang
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - O Wieland
- INFN, Sezione di Milano, I-20133 Milano, Italy
| | - K Yoneda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - J Zenihiro
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, 351-0198 Saitama, Japan
| | - A Zilges
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| |
Collapse
|
13
|
Paul N, Obertelli A, Bertulani CA, Corsi A, Doornenbal P, Rodriguez-Sanchez JL, Authelet G, Baba H, Calvet D, Château F, Chen S, Delbart A, Gheller JM, Giganon A, Gillibert A, Isobe T, Lapoux V, Matsushita M, Momiyama S, Motobayashi T, Niikura M, Otsu H, Péron C, Peyaud A, Pollacco EC, Roussé JY, Sakurai H, Santamaria C, Sasano M, Shiga Y, Steppenbeck D, Takeuchi S, Taniuchi R, Uesaka T, Wang H, Yoneda K, Ando T, Arici T, Blazhev A, Browne F, Bruce AM, Carroll R, Chung LX, Cortés ML, Dewald M, Ding B, Dombradi Z, Flavigny F, Franchoo S, Giacoppo F, Górska M, Gottardo A, Hadynska-Klek K, Korkulu Z, Koyama S, Kubota Y, Jungclaus A, Lee J, Lettmann M, Linh BD, Liu J, Liu Z, Lizarazo C, Louchart C, Lozeva R, Matsui K, Miyazaki T, Moschner K, Nagamine S, Nakatsuka N, Nita C, Nishimura S, Nobs CR, Olivier L, Ota S, Patel Z, Podolyák Z, Rudigier M, Sahin E, Saito TY, Shand C, Söderström PA, Stefan IG, Sumikama T, Suzuki D, Orlandi R, Vaquero V, Vajta Z, Werner V, Wimmer K, Wu J, Xu Z. Prominence of Pairing in Inclusive (p,2p) and (p,pn) Cross Sections from Neutron-Rich Nuclei. Phys Rev Lett 2019; 122:162503. [PMID: 31075035 DOI: 10.1103/physrevlett.122.162503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Indexed: 06/09/2023]
Abstract
Fifty-five inclusive single nucleon-removal cross sections from medium mass neutron-rich nuclei impinging on a hydrogen target at ∼250 MeV/nucleon are measured at the RIKEN Radioactive Isotope Beam Factory. Systematically higher cross sections are found for proton removal from nuclei with an even number of protons as compared to odd-proton number projectiles for a given neutron separation energy. Neutron removal cross sections display no even-odd splitting, contrary to nuclear cascade model predictions. Both effects are understood through simple considerations of neutron separation energies and bound state level densities originating in pairing correlations in the daughter nuclei. These conclusions are supported by comparison with semimicroscopic model predictions, highlighting the enhanced role of low-lying level densities in nucleon-removal cross sections from loosely bound nuclei.
Collapse
Affiliation(s)
- N Paul
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A Obertelli
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - C A Bertulani
- Department of Physics and Astronomy, Texas A&M University-Commerce, Commerce, Texas 75429-3011, USA
| | - A Corsi
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - P Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - J L Rodriguez-Sanchez
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- GSI Helmholtzzentrum für Schwerionenforschung, GmbH, D-64291 Darmstadt, Germany
| | - G Authelet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Calvet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - F Château
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Chen
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People's Republic of China
| | - A Delbart
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J-M Gheller
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Giganon
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Gillibert
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - T Isobe
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - V Lapoux
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Matsushita
- Center for Nuclear Study, The University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
| | - S Momiyama
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Niikura
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - H Otsu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - C Péron
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Peyaud
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - E C Pollacco
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J-Y Roussé
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Sakurai
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - C Santamaria
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - M Sasano
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Y Shiga
- Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 172-8501, Japan
| | - D Steppenbeck
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Takeuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - R Taniuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Uesaka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Wang
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Yoneda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Ando
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Arici
- GSI Helmholtzzentrum für Schwerionenforschung, GmbH, D-64291 Darmstadt, Germany
- Justus-Liebig-Universität Giessen, D-35392 Giessen, Germany
| | - A Blazhev
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - F Browne
- School of Computing Engineering and Mathematics, University of Brighton, Brighton, England BN2 4GJ, United Kingdom
| | - A M Bruce
- School of Computing Engineering and Mathematics, University of Brighton, Brighton, England BN2 4GJ, United Kingdom
| | - R Carroll
- Department of Physics, University of Surrey, Guildford, England GU2 7XH, United Kingdom
| | - L X Chung
- Institute for Nuclear Science and Technology, VINATOM, P.O. Box 5T-160, Nghia Do, Hanoi, Vietnam
| | - M L Cortés
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, GmbH, D-64291 Darmstadt, Germany
| | - M Dewald
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - B Ding
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Zs Dombradi
- MTA Atomki, P.O. Box 51, Debrecen H-4001, Hungary
| | - F Flavigny
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
| | - S Franchoo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
| | - F Giacoppo
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - M Górska
- GSI Helmholtzzentrum für Schwerionenforschung, GmbH, D-64291 Darmstadt, Germany
| | - A Gottardo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
| | - K Hadynska-Klek
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - Z Korkulu
- MTA Atomki, P.O. Box 51, Debrecen H-4001, Hungary
| | - S Koyama
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - Y Kubota
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, The University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
| | - J Lee
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - M Lettmann
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - B D Linh
- Institute for Nuclear Science and Technology, VINATOM, P.O. Box 5T-160, Nghia Do, Hanoi, Vietnam
| | - J Liu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - Z Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - C Lizarazo
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, GmbH, D-64291 Darmstadt, Germany
| | - C Louchart
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - R Lozeva
- IPHC, CNRS/IN2P3, Université de Strasbourg, F-67037 Strasbourg, France
- CSNSM, CNRS/IN2P3, Université Paris-Sud, F-91405 Orsay Campus, France
| | - K Matsui
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Miyazaki
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - K Moschner
- Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
| | - S Nagamine
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - N Nakatsuka
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - C Nita
- Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), RO-077125 Bucharest, Romania
| | - S Nishimura
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - C R Nobs
- School of Computing Engineering and Mathematics, University of Brighton, Brighton, England BN2 4GJ, United Kingdom
| | - L Olivier
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
| | - S Ota
- Center for Nuclear Study, The University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
| | - Z Patel
- Department of Physics, University of Surrey, Guildford, England GU2 7XH, United Kingdom
| | - Zs Podolyák
- Department of Physics, University of Surrey, Guildford, England GU2 7XH, United Kingdom
| | - M Rudigier
- Department of Physics, University of Surrey, Guildford, England GU2 7XH, United Kingdom
| | - E Sahin
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - T Y Saito
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - C Shand
- Department of Physics, University of Surrey, Guildford, England GU2 7XH, United Kingdom
| | - P-A Söderström
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Extreme Light Infrastructure-Nuclear Physics (ELI-NP), 077125 Bucharest-Măgurele, Romania
| | - I G Stefan
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
| | - T Sumikama
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - D Suzuki
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
| | - R Orlandi
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - V Vaquero
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
| | - Zs Vajta
- MTA Atomki, P.O. Box 51, Debrecen H-4001, Hungary
| | - V Werner
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - K Wimmer
- Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - J Wu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People's Republic of China
| | - Z Xu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| |
Collapse
|
14
|
Leblond S, Marqués FM, Gibelin J, Orr NA, Kondo Y, Nakamura T, Bonnard J, Michel N, Achouri NL, Aumann T, Baba H, Delaunay F, Deshayes Q, Doornenbal P, Fukuda N, Hwang JW, Inabe N, Isobe T, Kameda D, Kanno D, Kim S, Kobayashi N, Kobayashi T, Kubo T, Lee J, Minakata R, Motobayashi T, Murai D, Murakami T, Muto K, Nakashima T, Nakatsuka N, Navin A, Nishi S, Ogoshi S, Otsu H, Sato H, Satou Y, Shimizu Y, Suzuki H, Takahashi K, Takeda H, Takeuchi S, Tanaka R, Togano Y, Tuff AG, Vandebrouck M, Yoneda K. First Observation of ^{20}B and ^{21}B. Phys Rev Lett 2018; 121:262502. [PMID: 30636115 DOI: 10.1103/physrevlett.121.262502] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/23/2018] [Indexed: 06/09/2023]
Abstract
The most neutron-rich boron isotopes ^{20}B and ^{21}B have been observed for the first time following proton removal from ^{22}N and ^{22}C at energies around 230 MeV/nucleon. Both nuclei were found to exist as resonances which were detected through their decay into ^{19}B and one or two neutrons. Two-proton removal from ^{22}N populated a prominent resonancelike structure in ^{20}B at around 2.5 MeV above the one-neutron decay threshold, which is interpreted as arising from the closely spaced 1^{-},2^{-} ground-state doublet predicted by the shell model. In the case of proton removal from ^{22}C, the ^{19}B plus one- and two-neutron channels were consistent with the population of a resonance in ^{21}B 2.47±0.19 MeV above the two-neutron decay threshold, which is found to exhibit direct two-neutron decay. The ground-state mass excesses determined for ^{20,21}B are found to be in agreement with mass surface extrapolations derived within the latest atomic-mass evaluations.
Collapse
Affiliation(s)
- S Leblond
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - F M Marqués
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - J Gibelin
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - N A Orr
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - J Bonnard
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
| | - N Michel
- NSCL/FRIB Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
- School of Physics, Peking University, Beijing 100871, China
| | - N L Achouri
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - T Aumann
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - F Delaunay
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - Q Deshayes
- LPC Caen, Normandie Université, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050, Caen, France
| | - P Doornenbal
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - N Fukuda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J W Hwang
- Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea
| | - N Inabe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Kameda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Kanno
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Kim
- Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea
| | - N Kobayashi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - T Kubo
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Lee
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - R Minakata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Murai
- Departiment of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - T Murakami
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - K Muto
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - T Nakashima
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - A Navin
- GANIL, CEA/DRF-CNRS/IN2P3, F-14076 Caen Cedex 5, France
| | - S Nishi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Ogoshi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Satou
- Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Suzuki
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - K Takahashi
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - H Takeda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Takeuchi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - R Tanaka
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
- ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - A G Tuff
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
| | - M Vandebrouck
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| |
Collapse
|
15
|
Yasuda J, Sasano M, Zegers RGT, Baba H, Bazin D, Chao W, Dozono M, Fukuda N, Inabe N, Isobe T, Jhang G, Kameda D, Kaneko M, Kisamori K, Kobayashi M, Kobayashi N, Kobayashi T, Koyama S, Kondo Y, Krasznahorkay AJ, Kubo T, Kubota Y, Kurata-Nishimura M, Lee CS, Lee JW, Matsuda Y, Milman E, Michimasa S, Motobayashi T, Muecher D, Murakami T, Nakamura T, Nakatsuka N, Ota S, Otsu H, Panin V, Powell W, Reichert S, Sakaguchi S, Sakai H, Sako M, Sato H, Shimizu Y, Shikata M, Shimoura S, Stuhl L, Sumikama T, Suzuki H, Tangwancharoen S, Takaki M, Takeda H, Tako T, Togano Y, Tokieda H, Tsubota J, Uesaka T, Wakasa T, Yako K, Yoneda K, Zenihiro J. Extraction of the Landau-Migdal Parameter from the Gamow-Teller Giant Resonance in ^{132}Sn. Phys Rev Lett 2018; 121:132501. [PMID: 30312098 DOI: 10.1103/physrevlett.121.132501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/21/2018] [Indexed: 06/08/2023]
Abstract
The key parameter to discuss the possibility of the pion condensation in nuclear matter, i.e., the so-called Landau-Migdal parameter g^{'}, was extracted by measuring the double-differential cross sections for the (p,n) reaction at 216 MeV/u on a neutron-rich doubly magic unstable nucleus, ^{132}Sn with the quality comparable to data taken with stable nuclei. The extracted strengths for Gamow-Teller (GT) transitions from ^{132}Sn leading to ^{132}Sb exhibit the GT giant resonance (GTR) at the excitation energy of 16.3±0.4(stat)±0.4(syst) MeV with the width of Γ=4.7±0.8 MeV. The integrated GT strength up to E_{x}=25 MeV is S_{GT}^{-}=53±5(stat)_{-10}^{+11}(syst), corresponding to 56% of Ikeda's sum rule of 3(N-Z)=96. The present result accurately constrains the Landau-Migdal parameter as g^{'}=0.68±0.07, thanks to the high sensitivity of the GTR energy to g^{'}. In combination with previous studies on the GTR for ^{90}Zr and ^{208}Pb, the result of this work shows the constancy of this parameter in the nuclear chart region with (N-Z)/A=0.11 to 0.24 and A=90 to 208.
Collapse
Affiliation(s)
- J Yasuda
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Sasano
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - R G T Zegers
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
- Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Bazin
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - W Chao
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Dozono
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - N Fukuda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - N Inabe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - G Jhang
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - D Kameda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Kaneko
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - K Kisamori
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - M Kobayashi
- Center for Nuclear Study, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - N Kobayashi
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - T Kobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - S Koyama
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - Y Kondo
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - A J Krasznahorkay
- ATOMKI, Institute for Nuclear Research, Hungarian Academy of Sciences, P. O. Box 51, H-4001 Debrecen, Hungary
| | - T Kubo
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kubota
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | | | - C S Lee
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - J W Lee
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - Y Matsuda
- Department of Physics, Faculty of Science and Engineering, Konan University, 8-9-1 Higashinada, Kobe, Hyogo 658-8501, Japan
| | - E Milman
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Department of Physics, Kyungpook National University, Daegu 702-701, Korea
| | - S Michimasa
- Center for Nuclear Study, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Muecher
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Technical University of Munich, D-85748 Garching, Germany
- Department of Physics, University of Guelph, Ontario N1G 2W1, Canada
| | - T Murakami
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Nakamura
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - S Ota
- Center for Nuclear Study, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - V Panin
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - W Powell
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Reichert
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Technical University of Munich, D-85748 Garching, Germany
| | - S Sakaguchi
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sakai
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Sako
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Shikata
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Shimoura
- Center for Nuclear Study, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - L Stuhl
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Sumikama
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - H Suzuki
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Tangwancharoen
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Takaki
- Center for Nuclear Study, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - H Takeda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Tako
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - Y Togano
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - H Tokieda
- Center for Nuclear Study, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - J Tsubota
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Uesaka
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Wakasa
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - K Yako
- Center for Nuclear Study, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Zenihiro
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| |
Collapse
|
16
|
Flavigny F, Doornenbal P, Obertelli A, Delaroche JP, Girod M, Libert J, Rodriguez TR, Authelet G, Baba H, Calvet D, Château F, Chen S, Corsi A, Delbart A, Gheller JM, Giganon A, Gillibert A, Lapoux V, Motobayashi T, Niikura M, Paul N, Roussé JY, Sakurai H, Santamaria C, Steppenbeck D, Taniuchi R, Uesaka T, Ando T, Arici T, Blazhev A, Browne F, Bruce A, Carroll R, Chung LX, Cortés ML, Dewald M, Ding B, Franchoo S, Górska M, Gottardo A, Jungclaus A, Lee J, Lettmann M, Linh BD, Liu J, Liu Z, Lizarazo C, Momiyama S, Moschner K, Nagamine S, Nakatsuka N, Nita C, Nobs CR, Olivier L, Orlandi R, Patel Z, Podolyák Z, Rudigier M, Saito T, Shand C, Söderström PA, Stefan I, Vaquero V, Werner V, Wimmer K, Xu Z. Shape Evolution in Neutron-Rich Krypton Isotopes Beyond N=60: First Spectroscopy of ^{98,100}Kr. Phys Rev Lett 2017; 118:242501. [PMID: 28665635 DOI: 10.1103/physrevlett.118.242501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Indexed: 06/07/2023]
Abstract
We report on the first γ-ray spectroscopy of low-lying states in neutron-rich ^{98,100}Kr isotopes obtained from ^{99,101}Rb(p,2p) reactions at ∼220 MeV/nucleon. A reduction of the 2_{1}^{+} state energies beyond N=60 demonstrates a significant increase of deformation, shifted in neutron number compared to the sharper transition observed in strontium and zirconium isotopes. State-of-the-art beyond-mean-field calculations using the Gogny D1S interaction predict level energies in good agreement with experimental results. The identification of a low-lying (0_{2}^{+}, 2_{2}^{+}) state in ^{98}Kr provides the first experimental evidence of a competing configuration at low energy in neutron-rich krypton isotopes consistent with the oblate-prolate shape coexistence picture suggested by theory.
Collapse
Affiliation(s)
- F Flavigny
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - P Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A Obertelli
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | | | - M Girod
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - J Libert
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - T R Rodriguez
- Departamento de Física Teórica, Universidad Autónoma de Madrid, E-28049 Madrid, Spain
| | - G Authelet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Calvet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - F Château
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Chen
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People's Republic of China
| | - A Corsi
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Delbart
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J-M Gheller
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Giganon
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Gillibert
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - V Lapoux
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - T Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Niikura
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - N Paul
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J-Y Roussé
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Sakurai
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - C Santamaria
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - D Steppenbeck
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - R Taniuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Uesaka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Ando
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Arici
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Blazhev
- Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
| | - F Browne
- School of Computing Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - A Bruce
- School of Computing Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - R Carroll
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - L X Chung
- Institute for Nuclear Science and Technique, VINATOM, 179 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - M L Cortés
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - M Dewald
- Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
| | - B Ding
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - S Franchoo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - M Górska
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Gottardo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
| | - J Lee
- Department of Physics, University of Hong Kong, Pokfulam, Hong Kong
| | - M Lettmann
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - B D Linh
- Institute for Nuclear Science and Technique, VINATOM, 179 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - J Liu
- Department of Physics, University of Hong Kong, Pokfulam, Hong Kong
| | - Z Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - C Lizarazo
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - S Momiyama
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - K Moschner
- Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
| | - S Nagamine
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - N Nakatsuka
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - C Nita
- Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), RO-077125 Bucharest, Romania
| | - C R Nobs
- School of Computing Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - L Olivier
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - R Orlandi
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
| | - Z Patel
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Zs Podolyák
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - M Rudigier
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - T Saito
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - C Shand
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - P A Söderström
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - I Stefan
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - V Vaquero
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
| | - V Werner
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - K Wimmer
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - Z Xu
- Department of Physics, University of Hong Kong, Pokfulam, Hong Kong
| |
Collapse
|
17
|
Vaquero V, Jungclaus A, Doornenbal P, Wimmer K, Gargano A, Tostevin JA, Chen S, Nácher E, Sahin E, Shiga Y, Steppenbeck D, Taniuchi R, Xu ZY, Ando T, Baba H, Garrote FLB, Franchoo S, Hadynska-Klek K, Kusoglu A, Liu J, Lokotko T, Momiyama S, Motobayashi T, Nagamine S, Nakatsuka N, Niikura M, Orlandi R, Saito T, Sakurai H, Söderström PA, Tveten GM, Vajta Z, Yalcinkaya M. Gamma Decay of Unbound Neutron-Hole States in ^{133}Sn. Phys Rev Lett 2017; 118:202502. [PMID: 28581778 DOI: 10.1103/physrevlett.118.202502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Indexed: 06/07/2023]
Abstract
Excited states in the nucleus ^{133}Sn, with one neutron outside the double magic ^{132}Sn core, were populated following one-neutron knockout from a ^{134}Sn beam on a carbon target at relativistic energies at the Radioactive Isotope Beam Factory at RIKEN. Besides the γ rays emitted in the decay of the known neutron single-particle states in ^{133}Sn additional γ strength in the energy range 3.5-5.5 MeV was observed for the first time. Since the neutron-separation energy of ^{133}Sn is low, S_{n}=2.402(4) MeV, this observation provides direct evidence for the radiative decay of neutron-unbound states in this nucleus. The ability of electromagnetic decay to compete successfully with neutron emission at energies as high as 3 MeV above threshold is attributed to a mismatch between the wave functions of the initial and final states in the latter case. These findings suggest that in the region southeast of ^{132}Sn nuclear structure effects may play a significant role in the neutron versus γ competition in the decay of unbound states. As a consequence, the common neglect of such effects in the evaluation of the neutron-emission probabilities in calculations of global β-decay properties for astrophysical simulations may have to be reconsidered.
Collapse
Affiliation(s)
- V Vaquero
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
| | - P Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Wimmer
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - A Gargano
- Istituto Nazionale di Fisica Nucleare, Complesso Universitario di Monte S. Angelo, I-80126 Napoli, Italy
| | - J A Tostevin
- Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
| | - S Chen
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Bejing 100871, People's Republic of China
| | - E Nácher
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
| | - E Sahin
- Department of Physics, University of Oslo, NO-0316 Oslo, Norway
| | - Y Shiga
- Department of Physics, Rikkyo University, Tokyo, Japan
| | - D Steppenbeck
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - R Taniuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - Z Y Xu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - T Ando
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - H Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | | | - S Franchoo
- Institut de Physique Nucléaire Orsay, IN2P3-CNRS, 91406 Orsay Cedex, France
| | - K Hadynska-Klek
- Department of Physics, University of Oslo, NO-0316 Oslo, Norway
| | - A Kusoglu
- Department of Physics, Faculty of Science, Istanbul University, Vezneciler/Fatih, 34134 Istanbul, Turkey
- ELI-NP, Horia Hulubei National Institute of Physics and Nuclear Engineering, 077125 Magurele, Romania
| | - J Liu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - T Lokotko
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - S Momiyama
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Nagamine
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - N Nakatsuka
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - M Niikura
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - R Orlandi
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - T Saito
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - H Sakurai
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - P A Söderström
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - G M Tveten
- Department of Physics, University of Oslo, NO-0316 Oslo, Norway
| | - Zs Vajta
- MTA Atomki, P.O. Box 51, Debrecen H-4001, Hungary
| | - M Yalcinkaya
- Department of Physics, Faculty of Science, Istanbul University, Vezneciler/Fatih, 34134 Istanbul, Turkey
| |
Collapse
|
18
|
Paul N, Corsi A, Obertelli A, Doornenbal P, Authelet G, Baba H, Bally B, Bender M, Calvet D, Château F, Chen S, Delaroche JP, Delbart A, Gheller JM, Giganon A, Gillibert A, Girod M, Heenen PH, Lapoux V, Libert J, Motobayashi T, Niikura M, Otsuka T, Rodríguez TR, Roussé JY, Sakurai H, Santamaria C, Shimizu N, Steppenbeck D, Taniuchi R, Togashi T, Tsunoda Y, Uesaka T, Ando T, Arici T, Blazhev A, Browne F, Bruce AM, Carroll R, Chung LX, Cortés ML, Dewald M, Ding B, Flavigny F, Franchoo S, Górska M, Gottardo A, Jungclaus A, Lee J, Lettmann M, Linh BD, Liu J, Liu Z, Lizarazo C, Momiyama S, Moschner K, Nagamine S, Nakatsuka N, Nita C, Nobs CR, Olivier L, Patel Z, Podolyák Z, Rudigier M, Saito T, Shand C, Söderström PA, Stefan I, Orlandi R, Vaquero V, Werner V, Wimmer K, Xu Z. Are There Signatures of Harmonic Oscillator Shells Far from Stability? First Spectroscopy of ^{110}Zr. Phys Rev Lett 2017; 118:032501. [PMID: 28157341 DOI: 10.1103/physrevlett.118.032501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Indexed: 06/06/2023]
Abstract
The first measurement of the low-lying states of the neutron-rich ^{110}Zr and ^{112}Mo was performed via in-beam γ-ray spectroscopy after one proton removal on hydrogen at ∼200 MeV/nucleon. The 2_{1}^{+} excitation energies were found at 185(11) keV in ^{110}Zr, and 235(7) keV in ^{112}Mo, while the R_{42}=E(4_{1}^{+})/E(2_{1}^{+}) ratios are 3.1(2), close to the rigid rotor value, and 2.7(1), respectively. These results are compared to modern energy density functional based configuration mixing models using Gogny and Skyrme effective interactions. We conclude that first levels of ^{110}Zr exhibit a rotational behavior, in agreement with previous observations of lighter zirconium isotopes as well as with the most advanced Monte Carlo shell model predictions. The data, therefore, do not support a harmonic oscillator shell stabilization scenario at Z=40 and N=70. The present data also invalidate predictions for a tetrahedral ground state symmetry in ^{110}Zr.
Collapse
Affiliation(s)
- N Paul
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A Corsi
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Obertelli
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - P Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - G Authelet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - B Bally
- ESNT, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Bender
- IPNL, Université de Lyon, Université Lyon 1, CNRS/IN2P3, F-69622 Villeurbanne, France
| | - D Calvet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - F Château
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Chen
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People's Republic of China
| | | | - A Delbart
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J-M Gheller
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Giganon
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Gillibert
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Girod
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - P-H Heenen
- PNTPM, CP229, Université Libre de Bruxelles, B-1050 Bruxelles, Belgium
| | - V Lapoux
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Libert
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - T Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Niikura
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Otsuka
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T R Rodríguez
- Departamento de Física Teorica, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - J-Y Roussé
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Sakurai
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - C Santamaria
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - N Shimizu
- Center for Nuclear Study, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - D Steppenbeck
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - R Taniuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Togashi
- Center for Nuclear Study, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - Y Tsunoda
- Center for Nuclear Study, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Uesaka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Ando
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - T Arici
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Justus-Liebig-Universität Giessen, D-35392 Giessen, Germany
| | - A Blazhev
- Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
| | - F Browne
- School of Computing Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - A M Bruce
- School of Computing Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - R Carroll
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - L X Chung
- Institute for Nuclear Science and Technology, VAEI, 179 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - M L Cortés
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - M Dewald
- Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
| | - B Ding
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - F Flavigny
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - S Franchoo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - M Górska
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Gottardo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
| | - J Lee
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - M Lettmann
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - B D Linh
- Institute for Nuclear Science and Technology, VAEI, 179 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - J Liu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - Z Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - C Lizarazo
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - S Momiyama
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - K Moschner
- Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
| | - S Nagamine
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - N Nakatsuka
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - C Nita
- Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), RO-077125 Bucharest, Romania
| | - C R Nobs
- School of Computing Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - L Olivier
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - Z Patel
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Zs Podolyák
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - M Rudigier
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - T Saito
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - C Shand
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - P-A Söderström
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - I Stefan
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - R Orlandi
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
| | - V Vaquero
- Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain
| | - V Werner
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - K Wimmer
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
| | - Z Xu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| |
Collapse
|
19
|
Kondo Y, Nakamura T, Tanaka R, Minakata R, Ogoshi S, Orr NA, Achouri NL, Aumann T, Baba H, Delaunay F, Doornenbal P, Fukuda N, Gibelin J, Hwang JW, Inabe N, Isobe T, Kameda D, Kanno D, Kim S, Kobayashi N, Kobayashi T, Kubo T, Leblond S, Lee J, Marqués FM, Motobayashi T, Murai D, Murakami T, Muto K, Nakashima T, Nakatsuka N, Navin A, Nishi S, Otsu H, Sato H, Satou Y, Shimizu Y, Suzuki H, Takahashi K, Takeda H, Takeuchi S, Togano Y, Tuff AG, Vandebrouck M, Yoneda K. Nucleus ^{26}O: A Barely Unbound System beyond the Drip Line. Phys Rev Lett 2016; 116:102503. [PMID: 27015476 DOI: 10.1103/physrevlett.116.102503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Indexed: 06/05/2023]
Abstract
The unbound nucleus ^{26}O has been investigated using invariant-mass spectroscopy following one-proton removal reaction from a ^{27}F beam at 201 MeV/nucleon. The decay products, ^{24}O and two neutrons, were detected in coincidence using the newly commissioned SAMURAI spectrometer at the RIKEN Radioactive Isotope Beam Factory. The ^{26}O ground-state resonance was found to lie only 18±3(stat)±4(syst) keV above threshold. In addition, a higher lying level, which is most likely the first 2^{+} state, was observed for the first time at 1.28_{-0.08}^{+0.11} MeV above threshold. Comparison with theoretical predictions suggests that three-nucleon forces, pf-shell intruder configurations, and the continuum are key elements to understanding the structure of the most neutron-rich oxygen isotopes beyond the drip line.
Collapse
Affiliation(s)
- Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - R Tanaka
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - R Minakata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Ogoshi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N A Orr
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
| | - N L Achouri
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
| | - T Aumann
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
- ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - F Delaunay
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
| | - P Doornenbal
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - N Fukuda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Gibelin
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
| | - J W Hwang
- Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea
| | - N Inabe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Kameda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Kanno
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Kim
- Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea
| | - N Kobayashi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - T Kubo
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Leblond
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
| | - J Lee
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - F M Marqués
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - D Murai
- Departiment of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
| | - T Murakami
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - K Muto
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - T Nakashima
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - A Navin
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
| | - S Nishi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Satou
- Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Suzuki
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - K Takahashi
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - H Takeda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Takeuchi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
- ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
| | - A G Tuff
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
| | - M Vandebrouck
- Institut de Physique Nucléaire, Université Paris-Sud, IN2P3-CNRS, Université de Paris Sud, F-91406 Orsay, France
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| |
Collapse
|
20
|
Sasano M, Yasuda J, Zegers RGT, Baba H, Chao W, Dozono M, Fukuda N, Inabe N, Isobe T, Jhang G, Kamaeda D, Kubo T, Kurata-Nishimura M, Milman E, Motobayashi T, Otsu H, Panin V, Powell W, Sakai H, Sako M, Sato H, Shimizu Y, Stuhl L, Suzuki H, Tangwancharoen S, Takeda H, Uesaka T, Yoneda K, Zenihiro J, Kobayashi T, Sumikama T, Tako T, Nakamura T, Kondo Y, Togano Y, Shikata M, Tsubota J, Yako K, Shimoura K, Ota S, Kawase S, Kubota Y, Takaki M, Michimasa S, Kisamori K, Lee C, Tokieda H, Kobayashi M, Koyama S, Kobayashi N, Wakasa T, Sakaguchi S, Krasznahorkay A, Murakami T, Nakatsuka N, Kaneko M, Matsuda Y, Mucher D, Reichert S, Bazin D, Lee J. Study of Gamow-Teller transitions from 132Sn via the ( p, n) reaction at 220 MeV/u in inverse kinematics. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201610706003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
21
|
Yasuda H, Nagira T, Yoshiya M, Sugiyama A, Nakatsuka N, Kiire M, Uesugi M, Uesugi K, Umetani K, Kajiwara K. Massive transformation fromδphase toγphase in Fe–C alloys and strain induced in solidifying shell. ACTA ACUST UNITED AC 2012. [DOI: 10.1088/1757-899x/33/1/012036] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
22
|
|
23
|
Masamune S, Seidner R, Zenda H, Wiesel M, Nakatsuka N, Bigam G. Additions and Corrections - Low-Temperature Photolysis of Bicyclo[6.2.0]deca-2,4,6,9-tetraene and trans- and cis-9,10-Dihydronaphthalenes. Tetracyclo[4.4.0.02,10.05,7]deca-3,8-diene. J Am Chem Soc 2004. [DOI: 10.1021/ja00709a601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
24
|
Masamune S, Seidner RT, Zenda H, Wiesel M, Nakatsuka N, Bigam G. Low-temperature photolysis of bicyclo[6.2.0]deca-2,4,6,9-tetraene and trans- and cis-9,10-dihydronaphthalenes. Tetracyclo[4.4.0.02,10.05,7]deca-3,8-diene. J Am Chem Soc 2002. [DOI: 10.1021/ja01021a050] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
25
|
Masamune S, Zenda H, Wiesel M, Nakatsuka N, Bigam G. Thermolysis and photolysis of 3,3a,5a,6,6a,6b-hexahydro-3,6-ethenocycloprop [g]indazole. J Am Chem Soc 2002. [DOI: 10.1021/ja01012a067] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
26
|
Takada S, Nakatsuka N, Vukov R, Cain E. Additions and Corrections - Solvolysis and Thermolysis of exo-Bicyclo[2.1.1]hex-2-en-5-ol Derivatives. J Am Chem Soc 1970. [DOI: 10.1021/ja00709a604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
27
|
Abstract
This title compound has been shown to undergo thermal isomerizations, intramolecular Diels–Alder reaction, and rearrangement to cis-9,10-dihydronaphthalene. Evidence presented establishes that tetracyclo[4.4.0.0.2,1005,7]deca-3,8-diene is the intermediate of these reactions.
Collapse
|
28
|
Masamune S, Cain EN, Vukov R, Takada S, Nakatsuka N. A new approach towards the synthesis of the bicyclo[2,1,1]hex-2-ene system. ACTA ACUST UNITED AC 1969. [DOI: 10.1039/c29690000243] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
29
|
|