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Journal articles
Nearly degenerate isomeric states of $^{75}$Cu
C. Petrone
1
J.M. Daugas
2
G.S. Simpson
3
M. Stanoiu
1
C. Plaisir
2
T. Faul
2
C. Borcea
1
R. Borcea
1
L. Caceres
4
S. Calinescu
1
R. Chevrier
2
L. Gaudefroy
2
G. Georgiev
5
G. Gey
3
O. Kamalou
4
F. Negoita
1
F. Rotaru
1
O. Sorlin
4
J.C. Thomas
4
5
CSNSM SNO
CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609, CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
1
NIPNE - Horia Hulubei National Institute of Physics and Nuclear Engineering (Str. Atomistilor no.407 P.O.BOX MG-6 76900 Bucharest - Magurele - Romania)
- IFIN-HH (France)
2
DAM/DIF - DAM Île-de-France (CEA Bruyères-le-Châtel 91297 Arpajon cedex - France)
- DAM - Direction des Applications Militaires : DAM/DIF (France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DAM (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
3
LPSC - Laboratoire de Physique Subatomique et de Cosmologie (53 avenue des Martyrs - 38026 Grenoble Cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- Grenoble INP [2007-2019] - Institut polytechnique de Grenoble - Grenoble Institute of Technology [2007-2019] (46 avenue Félix Viallet 38031 Grenoble Cedex 1 - France)
- UGA [2016-2019] - Université Grenoble Alpes [2016-2019] (CS 40700 - 38058 Grenoble cedex - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5821 (France)
4
GANIL - Grand Accélérateur National d'Ions Lourds (Bvd Henri Becquerel - BP 55027 - 14076 CAEN CEDEX 5 - France)
- CNRS - Centre National de la Recherche Scientifique : UPR3266 (France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/GANIL (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
5
CSNSM SNO (France)
- CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609 (Bâtiments 104 et 108 91405 Orsay Campus - France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR8609 (France)
- CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (batiments 104 et 108 - 91405 Orsay Campus - France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR8609 (France)
Abstract : The decays of two isomeric states in the neutron-rich nucleus Cu75 have been studied via delayed γ-ray spectroscopy. These states were populated by the fragmentation of a 60.4AMeV Kr86 primary beam, which impinged on a Be target at the LISE2k spectrometer of GANIL. Isomeric half-lives and branching ratios were measured, and a γ−γ coincidence analysis performed. These have allowed a revised level scheme of Cu75 to be proposed. A comparison with large-scale shell-model calculations using different effective interactions and valence spaces shows the importance of proton excitations across the Z=28 shell gap for reproducing the energy spacing between the isomeric states. The coexisting collective and single-particle properties of the (1/2−) and (3/2−) states, respectively, are similar to those of the same states in the neighboring Cu69,71,73. The small energy spacings between the (1/2−), (3/2−), and 5/2− states are responsible for the isomerism.
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http://hal.in2p3.fr/in2p3-01353895
Contributor : Emmanuelle Vernay <>
Submitted on : Tuesday, August 16, 2016 - 9:22:49 AM
Last modification on : Thursday, August 6, 2020 - 3:09:31 AM
Contributor : Emmanuelle Vernay <>
Submitted on : Tuesday, August 16, 2016 - 9:22:49 AM
Last modification on : Thursday, August 6, 2020 - 3:09:31 AM
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- HAL Id : in2p3-01353895, version 1
- DOI : 10.1103/PhysRevC.94.024319
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Citation
C. Petrone, J.M. Daugas, G.S. Simpson, M. Stanoiu, C. Plaisir, et al.. Nearly degenerate isomeric states of $^{75}$Cu. Physical Review C, American Physical Society, 2016, 94 (2), pp.024319. ⟨10.1103/PhysRevC.94.024319⟩. ⟨in2p3-01353895⟩
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