Gamow-Teller transitions to {sup 64}Cu measured with the {sup 64}Zn(t,{sup 3}He) reaction
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321 (United States)
- Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859 (United States)
- Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824 (United States)
- Garsington, Oxfordshire, OX44 (United Kingdom)
The {sup 64}Zn(t,{sup 3}He) reaction has been studied by using a secondary triton beam of 115 MeV/nucleon to extract the Gamow-Teller transition-strength distribution to {sup 64}Cu. The results were compared with shell-model calculations with the pf-shell effective interactions KB3G and GXPF1A and with existing data from the {sup 64}Zn(d,{sup 2}He) reaction. Whereas the experimental results exhibited good consistency, neither of the theoretical predictions managed to reproduce the data. The implications for electron-capture rates during late stellar evolution were investigated. The rates based on the theoretical strength distributions are lower by factors of 3.5-5 compared to the rates based on experimental strength distributions.
- OSTI ID:
- 21289982
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 80, Issue 1; Other Information: DOI: 10.1103/PhysRevC.80.014313; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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