期刊
PHYSICAL REVIEW C
卷 102, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.102.034314
关键词
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资金
- Research Council of Norway [240104, 213442]
- KAKENHI [25247045, 23.01752, 25800130]
- U.S. DOE [DE-FG02-91ER-40609]
- German BMBF [05P19RDFN1]
- DFG [SFB 1245]
- Spanish Ministerio de Ciencia e Innovacion [FPA2009-13377C02, FPA2011-29854-C04, GINOP-2.3.3-15-2016-00034]
- Hungarian Scientific Research Fund OTKA [K128947]
- HPCI Strategic Program (The Origin of Matter and the Universe)
- Priority Issue on Post-K computer (Elucidation of the Fundamental Laws and Evolution of the Universe) [hp160211]
- CNS-RIKEN
- Rare Isotope Science Project - Ministry of Education, Science and Technology (MEST)
- National Research Foundation (NRF) of Korea
- Grants-in-Aid for Scientific Research [25800130] Funding Source: KAKEN
Background: Detailed spectroscopy of neutron-rich odd-A Cu isotopes is of great importance for studying the shell evolution in the region of Ni-78. While there is experimental information on excited states in 69-73,77,79CU isotopes, the information concerning Cu-75 is very limited. Purpose: Experimentally observed single-particle, core-coupling, and proton-hole intruder states in Cu-75, will complete the systematics of these states in the chain of isotopes. Method: Excited states in Cu-75 were populated in the beta decay of Ni-75 isotopes. The Ni nuclei were produced by the in-flight fission of U-238 projectiles, and were separated, identified, and implanted in a highly segmented Si detector array for the detection of the beta-decay electrons. The beta-delayed gamma rays were detected in a HPGe cluster array. Monte Carlo shell model calculations were performed using the A3DA interaction built on the pf g(9/2)d(5/2) model space for both neutrons and protons. Results: A level scheme of Cu-75 was built up to approximate to 4 MeV by performing a gamma-gamma coincidence analysis. The excited states below 2 MeV were interpreted based on the systematics of neutron-rich odd-A Cu isotopes and the results of the shell model calculations. Conclusions: The evolution of the single-particle, core-coupling, and proton-hole intruder states in the chain of neutron-rich odd-A Cu isotopes is discussed in the present work, in connection with the newly observed level structure of Cu-75.
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