Gamow-Teller transitions toCu64measured with theZn64(t,He3) reaction
| Autor: | Y. Shimbara, G. W. Hitt, Daniel Galaviz, Alexandra Gade, Mihai Horoi, Sam M. Austin, R. G. T. Zegers, Carol Guess, W. D. M. Rae, Clarisse Tur, M. E. Howard, E. Smith, D. Bazin |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Physical Review C. 80 |
| ISSN: | 1089-490X 0556-2813 |
| DOI: | 10.1103/physrevc.80.014313 |
| Popis: | The $^{64}\mathrm{Zn}$($t$,$^{3}\mathrm{He}$) reaction has been studied by using a secondary triton beam of 115 MeV/nucleon to extract the Gamow-Teller transition-strength distribution to $^{64}\mathrm{Cu}$. The results were compared with shell-model calculations with the $\mathit{pf}$-shell effective interactions KB3G and GXPF1A and with existing data from the $^{64}\mathrm{Zn}$($d$,$^{2}\mathrm{He}$) 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. |
| Databáze: | OpenAIRE |
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