期刊
PHYSICAL REVIEW C
卷 80, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.80.014313
关键词
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资金
- US National Science Foundation [PHY0216783 (JINA), PHY0555366, PHY-0758099]
- US Department of Energy [DE-FC02-09ER41584]
- Division Of Physics
- Direct For Mathematical & Physical Scien [0758099] Funding Source: National Science Foundation
The Zn-64(t,He-3) reaction has been studied by using a secondary triton beam of 115 MeV/nucleon to extract the Gamow-Teller transition-strength distribution to Cu-64. The results were compared with shell-model calculations with the pf-shell effective interactions KB3G and GXPF1A and with existing data from the Zn-64(d,He-2) 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.
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