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Lalanne L, Sorlin O, Poves A, Assié M, Hammache F, Koyama S, Suzuki D, Flavigny F, Girard-Alcindor V, Lemasson A, Matta A, Roger T, Beaumel D, Blumenfeld Y, Brown BA, Santos FDO, Delaunay F, de Séréville N, Franchoo S, Gibelin J, Guillot J, Kamalou O, Kitamura N, Lapoux V, Mauss B, Morfouace P, Pancin J, Saito TY, Stodel C, Thomas JC. N=16 Magicity Revealed at the Proton Drip Line through the Study of ^{35}Ca. Phys Rev Lett 2023; 131:092501. [PMID: 37721823 DOI: 10.1103/physrevlett.131.092501] [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: 02/28/2023] [Revised: 06/15/2023] [Accepted: 07/21/2023] [Indexed: 09/20/2023]
Abstract
The last proton bound calcium isotope ^{35}Ca has been studied for the first time, using the ^{37}Ca(p,t)^{35}Ca two neutron transfer reaction. The radioactive ^{37}Ca nuclei, produced by the LISE spectrometer at GANIL, interacted with the protons of the liquid hydrogen target CRYPTA, to produce tritons t that were detected in the MUST2 detector array, in coincidence with the heavy residues Ca or Ar. The atomic mass of ^{35}Ca and the energy of its first 3/2^{+} state are reported. A large N=16 gap of 4.61(11) MeV is deduced from the mass measurement, which together with other measured properties, makes ^{36}Ca a doubly magic nucleus. The N=16 shell gaps in ^{36}Ca and ^{24}O are of similar amplitude, at both edges of the valley of stability. This feature is discussed in terms of nuclear forces involved, within state-of-the-art shell model calculations. Even though the global agreement with data is quite convincing, the calculations underestimate the size of the N=16 gap in ^{36}Ca by 840 keV.
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Affiliation(s)
- L Lalanne
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - O Sorlin
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - A Poves
- Departamento de Física Teórica and IFT-UAM/CSIC, Universidad Autónoma de Madrid, E-2804 Madrid, Spain
| | - M Assié
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - F Hammache
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - S Koyama
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
- Department of Physics, The Unviversity of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - D Suzuki
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - F Flavigny
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - V Girard-Alcindor
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - A Lemasson
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - A Matta
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - T Roger
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - D Beaumel
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - Y Blumenfeld
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - B A Brown
- Department of Physics and Astronomy, National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - F De Oliveira Santos
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - F Delaunay
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - N de Séréville
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - S Franchoo
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - J Gibelin
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - J Guillot
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - O Kamalou
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - N Kitamura
- Center for Nuclear Study, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - V Lapoux
- CEA, Centre de Saclay, IRFU, Service de Physique Nucléaire, 91191 Gif-sur-Yvette, France
| | - B Mauss
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - P Morfouace
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - J Pancin
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - T Y Saito
- Department of Physics, The Unviversity of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - C Stodel
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - J-C Thomas
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
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Lalanne L, Sorlin O, Poves A, Assié M, Hammache F, Koyama S, Suzuki D, Flavigny F, Girard-Alcindor V, Lemasson A, Matta A, Roger T, Beaumel D, Blumenfeld Y, Brown BA, Santos FDO, Delaunay F, de Séréville N, Franchoo S, Gibelin J, Guillot J, Kamalou O, Kitamura N, Lapoux V, Mauss B, Morfouace P, Niikura M, Pancin J, Saito TY, Stodel C, Thomas JC. Structure of ^{36}Ca under the Coulomb Magnifying Glass. Phys Rev Lett 2022; 129:122501. [PMID: 36179171 DOI: 10.1103/physrevlett.129.122501] [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: 12/07/2021] [Revised: 05/05/2022] [Accepted: 08/08/2022] [Indexed: 06/16/2023]
Abstract
Detailed spectroscopy of the neutron-deficient nucleus ^{36}Ca was obtained up to 9 MeV using the ^{37}Ca(p,d)^{36}Ca and the ^{38}Ca(p,t)^{36}Ca transfer reactions. The radioactive nuclei, produced by the LISE spectrometer at GANIL, interacted with the protons of the liquid hydrogen target CRYPTA, to produce light ejectiles (the deuteron d or triton t) that were detected in the MUST2 detector array, in coincidence with the heavy residues identified by a zero-degree detection system. Our main findings are (i) a similar shift in energy for the 1_{1}^{+} and 2_{1}^{+} states by about -250 keV, as compared with the mirror nucleus ^{36}S; (ii) the discovery of an intruder 0_{2}^{+} state at 2.83(13) MeV, which appears below the first 2^{+} state, in contradiction with the situation in ^{36}S; and (iii) a tentative 0_{3}^{+} state at 4.83(17) MeV, proposed to exhibit a bubble structure with two neutron vacancies in the 2s_{1/2} orbit. The inversion between the 0_{2}^{+} and 2_{1}^{+} states is due to the large mirror energy difference (MED) of -516(130) keV for the former. This feature is reproduced by shell model calculations, using the sd-pf valence space, predicting an almost pure intruder nature for the 0_{2}^{+} state, with two protons (neutrons) being excited across the Z=20 magic closure in ^{36}Ca (^{36}S). This mirror system has the largest MEDs ever observed, if one excludes the few cases induced by the effect of the continuum.
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Affiliation(s)
- L Lalanne
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
| | - O Sorlin
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
| | - A Poves
- Departamento de Física Teórica and IFT-UAM/CSIC, Universidad Autónoma de Madrid, E-2804 Madrid, Spain
| | - M Assié
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - F Hammache
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - S Koyama
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
- Department of Physics, University of Tokyo, 113-0033, Tokyo, Japan
| | - D Suzuki
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - F Flavigny
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - V Girard-Alcindor
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
| | - A Lemasson
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
| | - A Matta
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - T Roger
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
| | - D Beaumel
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - Y Blumenfeld
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - B A Brown
- Department of Physics and Astronomy, National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan, USA
| | - F De Oliveira Santos
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
| | - F Delaunay
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - N de Séréville
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - S Franchoo
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - J Gibelin
- Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
| | - J Guillot
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - O Kamalou
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
| | - N Kitamura
- Center for Nuclear Study, University of Tokyo, 113-0033, Tokyo, Japan
| | - V Lapoux
- CEA, Centre de Saclay, IRFU, Service de Physique Nucléaire, 91191 Gif-sur-Yvette, France
| | - B Mauss
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - P Morfouace
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - M Niikura
- Department of Physics, University of Tokyo, 113-0033, Tokyo, Japan
| | - J Pancin
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
| | - T Y Saito
- Department of Physics, University of Tokyo, 113-0033, Tokyo, Japan
| | - C Stodel
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
| | - J-C Thomas
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, 14076 Caen, France
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Giovinazzo J, Roger T, Blank B, Rudolph D, Brown BA, Alvarez-Pol H, Arokia Raj A, Ascher P, Caamaño-Fresco M, Caceres L, Cox DM, Fernández-Domínguez B, Lois-Fuentes J, Gerbaux M, Grévy S, Grinyer GF, Kamalou O, Mauss B, Mentana A, Pancin J, Pibernat J, Piot J, Sorlin O, Stodel C, Thomas JC, Versteegen M. 4D-imaging of drip-line radioactivity by detecting proton emission from 54mNi pictured with ACTAR TPC. Nat Commun 2021; 12:4805. [PMID: 34376669 PMCID: PMC8355099 DOI: 10.1038/s41467-021-24920-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 07/01/2021] [Indexed: 11/16/2022] Open
Abstract
Proton radioactivity was discovered exactly 50 years ago. First, this nuclear decay mode sets the limit of existence on the nuclear landscape on the neutron-deficient side. Second, it comprises fundamental aspects of both quantum tunnelling as well as the coupling of (quasi)bound quantum states with the continuum in mesoscopic systems such as the atomic nucleus. Theoretical approaches can start either from bound-state nuclear shell-model theory or from resonance scattering. Thus, proton-radioactivity guides merging these types of theoretical approaches, which is of broader relevance for any few-body quantum system. Here, we report experimental measurements of proton-emission branches from an isomeric state in 54mNi, which were visualized in four dimensions in a newly developed detector. We show that these decays, which carry an unusually high angular momentum, ℓ = 5 and ℓ = 7, respectively, can be approximated theoretically with a potential model for the proton barrier penetration and a shell-model calculation for the overlap of the initial and final wave functions. Proton radioactivity is useful for studying nuclear structure. Here the authors report two proton emission branches from the 10+ state isomer of 54mNi by using a time projection chamber.
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Affiliation(s)
- J Giovinazzo
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, UMR 5797 CNRS/IN2P3 - Université de Bordeaux, Gradignan, Cedex, France.
| | - T Roger
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027, Caen, Cedex, France
| | - B Blank
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, UMR 5797 CNRS/IN2P3 - Université de Bordeaux, Gradignan, Cedex, France
| | - D Rudolph
- Department of Physics, Lund University, Lund, Sweden
| | - B A Brown
- Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI, USA
| | - H Alvarez-Pol
- IGFAE and Dpt. de Física de Partículas, Univ. of Santiago de Compostela, Santiago de Compostela, Spain
| | - A Arokia Raj
- Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium
| | - P Ascher
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, UMR 5797 CNRS/IN2P3 - Université de Bordeaux, Gradignan, Cedex, France
| | - M Caamaño-Fresco
- IGFAE and Dpt. de Física de Partículas, Univ. of Santiago de Compostela, Santiago de Compostela, Spain
| | - L Caceres
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027, Caen, Cedex, France
| | - D M Cox
- Department of Physics, Lund University, Lund, Sweden
| | - B Fernández-Domínguez
- IGFAE and Dpt. de Física de Partículas, Univ. of Santiago de Compostela, Santiago de Compostela, Spain
| | - J Lois-Fuentes
- IGFAE and Dpt. de Física de Partículas, Univ. of Santiago de Compostela, Santiago de Compostela, Spain
| | - M Gerbaux
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, UMR 5797 CNRS/IN2P3 - Université de Bordeaux, Gradignan, Cedex, France
| | - S Grévy
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, UMR 5797 CNRS/IN2P3 - Université de Bordeaux, Gradignan, Cedex, France
| | - G F Grinyer
- Department of Physics, University of Regina, Regina, SK, Canada
| | - O Kamalou
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027, Caen, Cedex, France
| | - B Mauss
- RIKEN Nishina Center, Wako, Saitama, Japan
| | - A Mentana
- Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven, Belgium
| | - J Pancin
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027, Caen, Cedex, France
| | - J Pibernat
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, UMR 5797 CNRS/IN2P3 - Université de Bordeaux, Gradignan, Cedex, France
| | - J Piot
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027, Caen, Cedex, France
| | - O Sorlin
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027, Caen, Cedex, France
| | - C Stodel
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027, Caen, Cedex, France
| | - J-C Thomas
- Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, B.P. 55027, Caen, Cedex, France
| | - M Versteegen
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, UMR 5797 CNRS/IN2P3 - Université de Bordeaux, Gradignan, Cedex, France
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Maunoury L, Delahaye P, Dubois M, Angot J, Sole P, Bajeat O, Barton C, Frigot R, Jeanne A, Jardin P, Kamalou O, Lecomte P, Osmond B, Peschard G, Lamy T, Savalle A. Charge breeder for the SPIRAL1 upgrade: Preliminary results. Rev Sci Instrum 2016; 87:02B508. [PMID: 26932061 DOI: 10.1063/1.4935215] [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] [Indexed: 06/05/2023]
Abstract
In the framework of the SPIRAL1 upgrade under progress at the GANIL lab, the charge breeder based on a LPSC Phoenix ECRIS, first tested at ISOLDE has been modified to benefit of the last enhancements of this device from the 1+/n+ community. The modifications mainly concern the 1 + optics, vacuum techniques, and the RF-buffer gas injection into the charge breeder. Prior to its installation in the midst of the low energy beam line of the SPIRAL1 facility, it has been decided to qualify its performances and several operation modes at the test bench of LPSC lab. This contribution shall present preliminary results of experiments conducted at LPSC concerning the 1 + to n+ conversion efficiencies for noble gases as well as for alkali elements and the corresponding transformation times.
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Affiliation(s)
- L Maunoury
- GANIL, Bd H. Becquerel BP 55027, F-14076 Caen Cedex 05, France
| | - P Delahaye
- GANIL, Bd H. Becquerel BP 55027, F-14076 Caen Cedex 05, France
| | - M Dubois
- GANIL, Bd H. Becquerel BP 55027, F-14076 Caen Cedex 05, France
| | - J Angot
- LPSC - Université Grenoble Alpes - CNRS/IN2P3, 53 rue des Martyrs, F-38026 Grenoble Cedex, France
| | - P Sole
- LPSC - Université Grenoble Alpes - CNRS/IN2P3, 53 rue des Martyrs, F-38026 Grenoble Cedex, France
| | - O Bajeat
- GANIL, Bd H. Becquerel BP 55027, F-14076 Caen Cedex 05, France
| | - C Barton
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
| | - R Frigot
- GANIL, Bd H. Becquerel BP 55027, F-14076 Caen Cedex 05, France
| | - A Jeanne
- GANIL, Bd H. Becquerel BP 55027, F-14076 Caen Cedex 05, France
| | - P Jardin
- GANIL, Bd H. Becquerel BP 55027, F-14076 Caen Cedex 05, France
| | - O Kamalou
- GANIL, Bd H. Becquerel BP 55027, F-14076 Caen Cedex 05, France
| | - P Lecomte
- GANIL, Bd H. Becquerel BP 55027, F-14076 Caen Cedex 05, France
| | - B Osmond
- GANIL, Bd H. Becquerel BP 55027, F-14076 Caen Cedex 05, France
| | - G Peschard
- GANIL, Bd H. Becquerel BP 55027, F-14076 Caen Cedex 05, France
| | - T Lamy
- LPSC - Université Grenoble Alpes - CNRS/IN2P3, 53 rue des Martyrs, F-38026 Grenoble Cedex, France
| | - A Savalle
- GANIL, Bd H. Becquerel BP 55027, F-14076 Caen Cedex 05, France
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Orrigo SEA, Rubio B, Fujita Y, Blank B, Gelletly W, Agramunt J, Algora A, Ascher P, Bilgier B, Cáceres L, Cakirli RB, Fujita H, Ganioğlu E, Gerbaux M, Giovinazzo J, Grévy S, Kamalou O, Kozer HC, Kucuk L, Kurtukian-Nieto T, Molina F, Popescu L, Rogers AM, Susoy G, Stodel C, Suzuki T, Tamii A, Thomas JC. Competition of β-delayed protons and β-delayed γrays in 56Zn and the exotic β-delayed γ-proton decay. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611706019] [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: 11/15/2022] Open
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Stodel C, Libin JF, Marry C, Lutton F, Saint-Laurent MG, Bastin B, Piot J, Clement E, Le Moal S, Morel V, Thomas JC, Kamalou O, Frémont G, Spitaëls C, Savajols H, Hue R, Gangnant P, Authier M, Drouart A, Van Lauwe A, Lamour E, Kallunkathariyil J, Bacri CO, Petitbon-Thévenet V, Lefort H, Pellemoine F. High intensity targets stations for S3. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-3936-5] [Citation(s) in RCA: 6] [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: 11/24/2022]
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7
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Orrigo SEA, Rubio B, Fujita Y, Blank B, Gelletly W, Agramunt J, Algora A, Ascher P, Bilgier B, Cáceres L, Cakirli RB, Fujita H, Ganioğlu E, Gerbaux M, Giovinazzo J, Grévy S, Kamalou O, Kozer HC, Kucuk L, Kurtukian-Nieto T, Molina F, Popescu L, Rogers AM, Susoy G, Stodel C, Suzuki T, Tamii A, Thomas JC. Observation of the β-delayed γ-proton decay of (56)Zn and its impact on the Gamow-Teller strength evaluation. Phys Rev Lett 2014; 112:222501. [PMID: 24949762 DOI: 10.1103/physrevlett.112.222501] [Citation(s) in RCA: 3] [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: 02/13/2014] [Indexed: 06/03/2023]
Abstract
We report the observation of a very exotic decay mode at the proton drip line, the β-delayed γ-proton decay, clearly seen in the β decay of the T_{z}=-2 nucleus ^{56}Zn. Three γ-proton sequences have been observed after the β decay. Here this decay mode, already observed in the sd shell, is seen for the first time in the fp shell. Both γ and proton decays have been taken into account in the estimation of the Fermi and Gamow-Teller strengths. Evidence for fragmentation of the Fermi strength due to strong isospin mixing is found.
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Affiliation(s)
- S E A Orrigo
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - B Rubio
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - Y Fujita
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan and Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - B Blank
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, CNRS/IN2P3-Université Bordeaux 1, 33175 Gradignan Cedex, France
| | - W Gelletly
- Department of Physics, University of Surrey, Guildford GU2 7XH, Surrey, United Kingdom
| | - J Agramunt
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
| | - A Algora
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain and Institute of Nuclear Research of the Hungarian Academy of Sciences, Debrecen H-4026, Hungary
| | - P Ascher
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, CNRS/IN2P3-Université Bordeaux 1, 33175 Gradignan Cedex, France
| | - B Bilgier
- Department of Physics, Istanbul University, Istanbul 34134, Turkey
| | - L Cáceres
- Grand Accélérateur National d'Ions Lourds, BP 55027, F-14076 Caen, France
| | - R B Cakirli
- Department of Physics, Istanbul University, Istanbul 34134, Turkey
| | - H Fujita
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - E Ganioğlu
- Department of Physics, Istanbul University, Istanbul 34134, Turkey
| | - M Gerbaux
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, CNRS/IN2P3-Université Bordeaux 1, 33175 Gradignan Cedex, France
| | - J Giovinazzo
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, CNRS/IN2P3-Université Bordeaux 1, 33175 Gradignan Cedex, France
| | - S Grévy
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, CNRS/IN2P3-Université Bordeaux 1, 33175 Gradignan Cedex, France
| | - O Kamalou
- Grand Accélérateur National d'Ions Lourds, BP 55027, F-14076 Caen, France
| | - H C Kozer
- Department of Physics, Istanbul University, Istanbul 34134, Turkey
| | - L Kucuk
- Department of Physics, Istanbul University, Istanbul 34134, Turkey
| | - T Kurtukian-Nieto
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, CNRS/IN2P3-Université Bordeaux 1, 33175 Gradignan Cedex, France
| | - F Molina
- Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain and Comisión Chilena de Energía Nuclear, Casilla 188-D, Santiago, Chile
| | - L Popescu
- SCK·CEN, Boeretang 200, 2400 Mol, Belgium
| | - A M Rogers
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - G Susoy
- Department of Physics, Istanbul University, Istanbul 34134, Turkey
| | - C Stodel
- Grand Accélérateur National d'Ions Lourds, BP 55027, F-14076 Caen, France
| | - T Suzuki
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - A Tamii
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - J C Thomas
- Grand Accélérateur National d'Ions Lourds, BP 55027, F-14076 Caen, France
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Orrigo S, Rubio B, Fujita Y, Blank B, Gelletly W, Agramunt J, Algora A, Ascher P, Bilgier B, Cáceres L, Cakirli RB, Fujita H, Ganioğlu E, Gerbaux M, Giovinazzo J, Grévy S, Kamalou O, Kozer HC, Kucuk L, Kurtukian-Nieto T, Molina F, Popescu L, Rogers AM, Susoy G, Stodel C, Suzuki T, Tamii A, Thomas JC. Beta decay of exotic TZ= -1, -2 nuclei: the interesting case of 56Zn. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146602077] [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
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9
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Ujić P, de Oliveira Santos F, Lewitowicz M, Achouri NL, Assié M, Bastin B, Borcea C, Borcea R, Buta A, Coc A, de France G, Kamalou O, Kiener J, Lepailleur A, Meot V, Pautrat A, Saint Laurent MG, Sorlin O, Stanoiu M, Tatischeff V. Search for superscreening effects in a superconductor. Phys Rev Lett 2013; 110:032501. [PMID: 23373914 DOI: 10.1103/physrevlett.110.032501] [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: 10/24/2012] [Indexed: 06/01/2023]
Abstract
The decay of (19)O(β(-)) and (19)Ne(β(+)) implanted in niobium in its superconducting and metallic phases was measured using purified radioactive beams produced by the SPIRAL GANIL facility. Half-lives and branching ratios measured in the two phases are consistent within a 1σ error bar. This measurement casts strong doubts on the predicted strong electron screening in a superconductor, the so-called superscreening. The measured difference in screening potential energy is 110(90) eV for (19)Ne and 400(320) eV for (19)O. Precise determinations of the half-lives were obtained for (19)O, 26.476(9) s, and for (19)Ne, 17.254(5) s.
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Affiliation(s)
- P Ujić
- GANIL CEA/DSM-CNRS/IN2P3, Caen, France
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10
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Delaune O, Caamaño M, Farget F, Tarasov O, Derkx X, Schmidt KH, Audouin L, Amthor A, Bacri CO, Barreau G, Bastin B, Bazin D, Benlliure J, Blank B, Cacères L, Casarejos E, Fernández-Domínguez B, Gaudefroy L, Golabek C, Grévy S, Jurado B, Kamalou O, Lemasson A, Lukyanov S, Mittig W, Morrissey D, Navin A, Pereira J, Perrot L, Rejmund M, Roger T, Saint-Laurent M, Savajols H, Schmitt C, Sherrill B, Stodel C, Thomas J, Villari A. Complete isotopic distributions of fragments produced in transfer- and fusion-induced reactions. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20136206006] [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
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11
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Delaune O, Caamaño M, Derkx X, Farget F, Schmidt KH, Tarasov O, Audouin L, Amthor A, Bacri CO, Barreau G, Bastin B, Bazin D, Benlliure J, Blank B, Cacères L, Casarejos E, Fernández-Domínguez B, Gaudefroy L, Golabek C, Grévy S, Jurado B, Kamalou O, Lemasson A, Lukyanov S, Mittig W, Morrissey D, Navin A, Pereira J, Perrot L, Rejmund M, Roger T, Saint-Laurent M, Savajols H, Schmitt C, Sherrill B, Stodel C, Taieb J, Thomas J, Villari A. Evolution of isotopic fission-fragment yields with excitation energy. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20123100025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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