1
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König K, Berengut JC, Borschevsky A, Brinson A, Brown BA, Dockery A, Elhatisari S, Eliav E, Ruiz RFG, Holt JD, Hu BS, Karthein J, Lee D, Ma YZ, Meißner UG, Minamisono K, Oleynichenko AV, Pineda SV, Prosnyak SD, Reitsma ML, Skripnikov LV, Vernon A, Zaitsevskii A. Nuclear Charge Radii of Silicon Isotopes. PHYSICAL REVIEW LETTERS 2024; 132:162502. [PMID: 38701465 DOI: 10.1103/physrevlett.132.162502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 01/12/2024] [Accepted: 02/26/2024] [Indexed: 05/05/2024]
Abstract
The nuclear charge radius of ^{32}Si was determined using collinear laser spectroscopy. The experimental result was confronted with ab initio nuclear lattice effective field theory, valence-space in-medium similarity renormalization group, and mean field calculations, highlighting important achievements and challenges of modern many-body methods. The charge radius of ^{32}Si completes the radii of the mirror pair ^{32}Ar-^{32}Si, whose difference was correlated to the slope L of the symmetry energy in the nuclear equation of state. Our result suggests L≤60 MeV, which agrees with complementary observables.
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Affiliation(s)
- Kristian König
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Technische Universtität Darmstadt, 64289 Darmstadt, Germany
| | - Julian C Berengut
- School of Physics, University of New South Wales, NSW 2052, Australia
| | | | - Alex Brinson
- Massachusetts Institute of Technology, Department of Physics, Cambridge, Massachusetts 02139, USA
| | - B Alex Brown
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Astronomy and Physics, Michigan State University, East Lansing, Michigan 48824, USA
| | - Adam Dockery
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Astronomy and Physics, Michigan State University, East Lansing, Michigan 48824, USA
| | - Serdar Elhatisari
- Faculty of Natural Sciences and Engineering, Gaziantep Islam Science and Technology University, Gaziantep 27010, Turkey
- Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany
| | - Ephraim Eliav
- School of Chemistry, Tel Aviv University, 69978 Tel Aviv, Israel
| | - Ronald F Garcia Ruiz
- Massachusetts Institute of Technology, Department of Physics, Cambridge, Massachusetts 02139, USA
| | - Jason D Holt
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
- Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada
| | - Bai-Shan Hu
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Jonas Karthein
- Massachusetts Institute of Technology, Department of Physics, Cambridge, Massachusetts 02139, USA
| | - Dean Lee
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Astronomy and Physics, Michigan State University, East Lansing, Michigan 48824, USA
| | - Yuan-Zhuo Ma
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Astronomy and Physics, Michigan State University, East Lansing, Michigan 48824, USA
| | - Ulf-G Meißner
- Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany
| | - Kei Minamisono
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Astronomy and Physics, Michigan State University, East Lansing, Michigan 48824, USA
| | - Alexander V Oleynichenko
- Petersburg Nuclear Physics Institute named by B. P. Konstantinov of NRC "Kurchatov Institute," Gatchina 188300, Russia
- Moscow Institute of Physics and Technology, Institutsky lane 9, Dolgoprudny, Moscow region, 141700, Russia
| | - Skyy V Pineda
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - Sergey D Prosnyak
- Petersburg Nuclear Physics Institute named by B. P. Konstantinov of NRC "Kurchatov Institute," Gatchina 188300, Russia
- Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
| | | | - Leonid V Skripnikov
- Petersburg Nuclear Physics Institute named by B. P. Konstantinov of NRC "Kurchatov Institute," Gatchina 188300, Russia
- Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
| | - Adam Vernon
- Massachusetts Institute of Technology, Department of Physics, Cambridge, Massachusetts 02139, USA
| | - Andréi Zaitsevskii
- Petersburg Nuclear Physics Institute named by B. P. Konstantinov of NRC "Kurchatov Institute," Gatchina 188300, Russia
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie gory 1/3, Moscow 119991, Russia
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2
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Zanon I, Clément E, Goasduff A, Menéndez J, Miyagi T, Assié M, Ciemała M, Flavigny F, Lemasson A, Matta A, Ramos D, Rejmund M, Achouri L, Ackermann D, Barrientos D, Beaumel D, Benzoni G, Boston AJ, Boston HC, Bottoni S, Bracco A, Brugnara D, de France G, de Sereville N, Delaunay F, Desesquelles P, Didierjean F, Domingo-Prato C, Dudouet J, Eberth J, Fernández D, Fougères C, Gadea A, Galtarossa F, Girard-Alcindor V, Gonzales V, Gottardo A, Hammache F, Harkness-Brennan LJ, Hess H, Judson DS, Jungclaus A, Kaşkaş A, Kim YH, Kuşoğlu A, Labiche M, Leblond S, Lenain C, Lenzi SM, Leoni S, Li H, Ljungvall J, Lois-Fuentes J, Lopez-Martens A, Maj A, Menegazzo R, Mengoni D, Michelagnoli C, Million B, Napoli DR, Nyberg J, Pasqualato G, Podolyak Z, Pullia A, Quintana B, Recchia F, Regueira-Castro D, Reiter P, Rezynkina K, Rojo JS, Salsac MD, Sanchis E, Şenyiğit M, Siciliano M, Sohler D, Stezowski O, Theisen C, Utepov A, Valiente-Dobón JJ, Verney D, Zielinska M. High-Precision Spectroscopy of ^{20}O Benchmarking Ab Initio Calculations in Light Nuclei. PHYSICAL REVIEW LETTERS 2023; 131:262501. [PMID: 38215380 DOI: 10.1103/physrevlett.131.262501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 09/18/2023] [Accepted: 11/21/2023] [Indexed: 01/14/2024]
Abstract
The excited states of unstable ^{20}O were investigated via γ-ray spectroscopy following the ^{19}O(d,p)^{20}O reaction at 8 AMeV. By exploiting the Doppler shift attenuation method, the lifetimes of the 2_{2}^{+} and 3_{1}^{+} states were firmly established. From the γ-ray branching and E2/M1 mixing ratios for transitions deexciting the 2_{2}^{+} and 3_{1}^{+} states, the B(E2) and B(M1) were determined. Various chiral effective field theory Hamiltonians, describing the nuclear properties beyond ground states, along with a standard USDB interaction, were compared with the experimentally obtained data. Such a comparison for a large set of γ-ray transition probabilities with the valence space in medium similarity renormalization group ab initio calculations was performed for the first time in a nucleus far from stability. It was shown that the ab initio approaches using chiral effective field theory forces are challenged by detailed high-precision spectroscopic properties of nuclei. The reduced transition probabilities were found to be a very constraining test of the performance of the ab initio models.
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Affiliation(s)
- I Zanon
- INFN Laboratori Nazionali di Legnaro, Legnaro, Italy
- Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, Ferrara, Italy
| | - E Clément
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - A Goasduff
- INFN Laboratori Nazionali di Legnaro, Legnaro, Italy
| | - J Menéndez
- Department of Quantum Physics and Astrophysics and Institute of Cosmos Sciences, University of Barcelona, Spain
| | - T Miyagi
- Department of Physics, Technische Universität Darmstadt, Darmstadt, Germany
- ExtreMe Matter Institute, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M Assié
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | | | - F Flavigny
- Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen UMR6534, F-14000 Caen, France
| | - A Lemasson
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - A Matta
- Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen UMR6534, F-14000 Caen, France
| | - D Ramos
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - M Rejmund
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - L Achouri
- Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen UMR6534, F-14000 Caen, France
| | - D Ackermann
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | | | - D Beaumel
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - G Benzoni
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - A J Boston
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, United Kingdom
| | - H C Boston
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, United Kingdom
| | - S Bottoni
- INFN Sezione di Milano, I-20133 Milano, Italy
- Dipartimento di Fisica, Università di Milano, Milano, Italy
| | - A Bracco
- INFN Sezione di Milano, I-20133 Milano, Italy
- Dipartimento di Fisica, Università di Milano, Milano, Italy
| | - D Brugnara
- INFN Laboratori Nazionali di Legnaro, Legnaro, Italy
- Dipartimento di Fisica, Università di Padova, Padova, Italy
| | - G de France
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - N de Sereville
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - F Delaunay
- Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen UMR6534, F-14000 Caen, France
| | - P Desesquelles
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - F Didierjean
- Université de Strasbourg, IPHC, Strasbourg, France
| | - C Domingo-Prato
- Instituto de Fisica Corpuscolar, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - J Dudouet
- Université de Lyon, Université Lyon-1, CNRS/IN2P3, UMR5822, IP2I, F-69622 Villeurbanne Cedex, France
| | - J Eberth
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - D Fernández
- IGFAE and Department de Física de Partículas, Universidade of Santiago de Compostela, Santiago de Compostela, Spain
| | - C Fougères
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - A Gadea
- Instituto de Fisica Corpuscolar, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - F Galtarossa
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - V Girard-Alcindor
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - V Gonzales
- Departamento de Ingeniería Electrónica, Universitat de Valencia, Burjassot, Valencia, Spain
| | - A Gottardo
- INFN Laboratori Nazionali di Legnaro, Legnaro, Italy
| | - F Hammache
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | | | - H Hess
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - D S Judson
- Oliver Lodge Laboratory, The University of Liverpool, Liverpool, United Kingdom
| | - A Jungclaus
- Instituto de Estructura de la Materia, CSIC, Madrid, E-28006 Madrid, Spain
| | - A Kaşkaş
- Department of Physics, Faculty of Science, Ankara University, 06100 Besevler - Ankara, Turkey
| | - Y H Kim
- Institue Laue-Langevin, Grenoble, France
| | - A Kuşoğlu
- Department of Physics, Faculty of Science, Istanbul University, Vezneciler/Fatih, Istanbul, Turkey
| | - M Labiche
- STFC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United Kingdom
| | - S Leblond
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - C Lenain
- Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen UMR6534, F-14000 Caen, France
| | - S M Lenzi
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - S Leoni
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - H Li
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
| | - J Ljungvall
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - J Lois-Fuentes
- IGFAE and Department de Física de Partículas, Universidade of Santiago de Compostela, Santiago de Compostela, Spain
| | - A Lopez-Martens
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - A Maj
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Kraków, Poland
| | - R Menegazzo
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - D Mengoni
- Dipartimento di Fisica, Università di Padova, Padova, Italy
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - C Michelagnoli
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
- Institue Laue-Langevin, Grenoble, France
| | - B Million
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - D R Napoli
- INFN Laboratori Nazionali di Legnaro, Legnaro, Italy
| | - J Nyberg
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - G Pasqualato
- Dipartimento di Fisica, Università di Padova, Padova, Italy
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - Zs Podolyak
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
| | - A Pullia
- INFN Sezione di Milano, I-20133 Milano, Italy
| | - B Quintana
- Laboratorio de Radiaciones Ionizantes, Departamento de Física Fundamental, Universidad de Salamanca, E-37008 Salamanca, Spain
| | - F Recchia
- Dipartimento di Fisica, Università di Padova, Padova, Italy
- INFN, Sezione di Padova, I-35131 Padova, Italy
| | - D Regueira-Castro
- IGFAE and Department de Física de Partículas, Universidade of Santiago de Compostela, Santiago de Compostela, Spain
| | - P Reiter
- Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
| | - K Rezynkina
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - J S Rojo
- Department of Physics, University of York, York, United Kingdom
| | - M D Salsac
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - E Sanchis
- Departamento de Ingeniería Electrónica, Universitat de Valencia, Burjassot, Valencia, Spain
| | - M Şenyiğit
- Department of Physics, Faculty of Science, Ankara University, 06100 Besevler - Ankara, Turkey
| | - M Siciliano
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - D Sohler
- Institute for Nuclear Research, Atomki, 4001 Debrecen, Hungary
| | - O Stezowski
- Université de Lyon, Université Lyon-1, CNRS/IN2P3, UMR5822, IP2I, F-69622 Villeurbanne Cedex, France
| | - Ch Theisen
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Utepov
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Caen, France
- Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen UMR6534, F-14000 Caen, France
| | | | - D Verney
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - M Zielinska
- Irfu, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
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König K, Fritzsche S, Hagen G, Holt JD, Klose A, Lantis J, Liu Y, Minamisono K, Miyagi T, Nazarewicz W, Papenbrock T, Pineda SV, Powel R, Reinhard PG. Surprising Charge-Radius Kink in the Sc Isotopes at N=20. PHYSICAL REVIEW LETTERS 2023; 131:102501. [PMID: 37739365 DOI: 10.1103/physrevlett.131.102501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 05/10/2023] [Accepted: 06/21/2023] [Indexed: 09/24/2023]
Abstract
Charge radii of neutron deficient ^{40}Sc and ^{41}Sc nuclei were determined using collinear laser spectroscopy. With the new data, the chain of Sc charge radii extends below the neutron magic number N=20 and shows a pronounced kink, generally taken as a signature of a shell closure, but one notably absent in the neighboring Ca, K, and Ar isotopic chains. Theoretical models that explain the trend at N=20 for the Ca isotopes cannot reproduce this puzzling behavior.
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Affiliation(s)
- Kristian König
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Nuclear Physics, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - Stephan Fritzsche
- Helmholtz Institute Jena, 07743 Jena, Germany
- Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
| | - Gaute Hagen
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Jason D Holt
- TRIUMF, Vancouver, British Colombia, V6T 2A3, Canada
- Department of Physics, McGill University, Montréal, Quebec, H3A 2T8, Canada
| | - Andrew Klose
- Department of Chemistry and Biochemistry, Augustana University, Sioux Falls, South Dakota 57197, USA
| | - Jeremy Lantis
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - Yuan Liu
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
| | - Kei Minamisono
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - Takayuki Miyagi
- Department of Nuclear Physics, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Witold Nazarewicz
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - Thomas Papenbrock
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Skyy V Pineda
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - Robert Powel
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
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4
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Enciu M, Liu HN, Obertelli A, Doornenbal P, Nowacki F, Ogata K, Poves A, Yoshida K, Achouri NL, Baba H, Browne F, Calvet D, Château F, Chen S, Chiga N, Corsi A, Cortés ML, Delbart A, Gheller JM, Giganon A, Gillibert A, Hilaire C, Isobe T, Kobayashi T, Kubota Y, Lapoux V, Motobayashi T, Murray I, Otsu H, Panin V, Paul N, Rodriguez W, Sakurai H, Sasano M, Steppenbeck D, Stuhl L, Sun YL, Togano Y, Uesaka T, Wimmer K, Yoneda K, Aktas O, Aumann T, Chung LX, Flavigny F, Franchoo S, Gasparic I, Gerst RB, Gibelin J, Hahn KI, Kim D, Kondo Y, Koseoglou P, Lee J, Lehr C, Li PJ, Linh BD, Lokotko T, MacCormick M, Moschner K, Nakamura T, Park SY, Rossi D, Sahin E, Söderström PA, Sohler D, Takeuchi S, Toernqvist H, Vaquero V, Wagner V, Wang S, Werner V, Xu X, Yamada H, Yan D, Yang Z, Yasuda M, Zanetti L. Extended p_{3/2} Neutron Orbital and the N=32 Shell Closure in ^{52}Ca. PHYSICAL REVIEW LETTERS 2022; 129:262501. [PMID: 36608181 DOI: 10.1103/physrevlett.129.262501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 10/24/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
The one-neutron knockout from ^{52}Ca in inverse kinematics onto a proton target was performed at ∼230 MeV/nucleon combined with prompt γ spectroscopy. Exclusive quasifree scattering cross sections to bound states in ^{51}Ca and the momentum distributions corresponding to the removal of 1f_{7/2} and 2p_{3/2} neutrons were measured. The cross sections, interpreted within the distorted-wave impulse approximation reaction framework, are consistent with a shell closure at the neutron number N=32, found as strong as at N=28 and N=34 in Ca isotopes from the same observables. The analysis of the momentum distributions leads to a difference of the root-mean-square radii of the neutron 1f_{7/2} and 2p_{3/2} orbitals of 0.61(23) fm, in agreement with the modified-shell-model prediction of 0.7 fm suggesting that the large root-mean-square radius of the 2p_{3/2} orbital in neutron-rich Ca isotopes is responsible for the unexpected linear increase of the charge radius with the neutron number.
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Affiliation(s)
- M Enciu
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - H N Liu
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - A Obertelli
- Institut für Kernphysik, Technische Universität Darmstadt, 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
| | - F Nowacki
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - K Ogata
- Department of Physics, Kyushu University, Fukuoka 819-0395, Japan
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki 567-0047, Japan
| | - A Poves
- Departamento de Fisica Teorica and IFT UAM-CSIC, Universidad Autonoma de Madrid, Spain
| | - K Yoshida
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - N L Achouri
- LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, F-14000 Caen, France
| | - H Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - F Browne
- 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
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
- State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - N Chiga
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A Corsi
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M L Cortés
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - 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
| | - C Hilaire
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - T Isobe
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - Y Kubota
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
| | - 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
| | - I Murray
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, F-91405 Orsay cedex, France
| | - H Otsu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - V Panin
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - N Paul
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS, PSL Research University, Collège de France, Case 74, 4 Place Jussieu, 75005 Paris, France
| | - W Rodriguez
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Pontificia Universidad Javeriana, Facultad de Ciencias, Departamento de Física, Bogotá, Colombia
- Universidad Nacional de Colombia, Sede Bogotá, Facultad de Ciencias, Departamento de Física, Bogotá 111321, Colombia
| | - 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
| | - M Sasano
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Steppenbeck
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - L Stuhl
- Center for Nuclear Study, University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
- Institute for Nuclear Research, Atomki, P.O. Box 51, Debrecen H-4001, Hungary
- Institute for Basic Science, Daejeon 34126, Korea
| | - Y L Sun
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Y Togano
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 172-8501, Japan
| | - T Uesaka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Wimmer
- 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 Yoneda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - O Aktas
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - T Aumann
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany
| | - L X Chung
- Institute for Nuclear Science & Technology, VINATOM, 179 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - F Flavigny
- LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, F-14000 Caen, France
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, F-91405 Orsay cedex, France
| | - S Franchoo
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, F-91405 Orsay cedex, France
| | - I Gasparic
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - R-B Gerst
- Institut für Kernphysik, Universität zu Köln, D-50937 Cologne, Germany
| | - J Gibelin
- LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, F-14000 Caen, France
| | - K I Hahn
- Institute for Basic Science, Daejeon 34126, Korea
- Ewha Womans University, Seoul 03760, Korea
| | - D Kim
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Institute for Basic Science, Daejeon 34126, Korea
- Ewha Womans University, Seoul 03760, Korea
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
| | - P Koseoglou
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany
| | - J Lee
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - C Lehr
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - P J Li
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - B D Linh
- Institute for Nuclear Science & Technology, VINATOM, 179 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - T Lokotko
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - M MacCormick
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, F-91405 Orsay cedex, France
| | - K Moschner
- Institut für Kernphysik, Universität zu Köln, D-50937 Cologne, Germany
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
| | - S Y Park
- Institute for Basic Science, Daejeon 34126, Korea
- Ewha Womans University, Seoul 03760, Korea
| | - D Rossi
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - E Sahin
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
| | - P-A Söderström
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - D Sohler
- Institute for Nuclear Research, Atomki, P.O. Box 51, Debrecen H-4001, Hungary
| | - S Takeuchi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
| | - H Toernqvist
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany
| | - V Vaquero
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
| | - V Wagner
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - S Wang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - V Werner
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- Helmholtz Forschungsakademie Hessen für FAIR (HFHF), GSI Helmholtzzentrum für Schwerionenforschung, Campus Darmstadt, 64289 Darmstadt, Germany
| | - X Xu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
| | - H Yamada
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
| | - D Yan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Z Yang
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Yasuda
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
| | - L Zanetti
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
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