| Autor: |
Fujita, Y, Fujita, H, Adachi, T, Berg, GPA, Caurier, E, Fujimura, H, Hara, K, Hatanaka, K, Janas, Z, Kamiya, J, Kawabata, T, Langanke, K, Martinez-Pinedo, G, Noro, T, Roeckl, E, Shimbara, Y, Shinada, T, van der Werf, SY, Yoshifuku, M, Yosoi, M, Zegers, RGT |
| Přispěvatelé: |
KVI - Center for Advanced Radiation Technology |
| Jazyk: |
angličtina |
| Rok vydání: |
2002 |
| Předmět: |
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| Zdroj: |
European Physical Journal A, 13(4), 411-418. SPRINGER |
| ISSN: |
1434-6001 |
| Popis: |
Under the assumption that isospin is a good quantum number, symmetry is expected for the transitions from the ground states of T = 1, T-z = +/-1 nuclei to the common excited states of the T-z = 0 nucleus situated between the two nuclei. The symmetry can be studied by comparing the strengths of Gamow-Teller (GT) transitions obtained from a (p, n)-type charge-exchange reaction on a target nucleus with T-z = 1 with those from the beta-decay of the T-z = -1 nucleus. The A = 58 system is the heaviest for which such a comparison is possible. As a part of the symmetry study, we measured the GT transitions from Ni-58 (T-z = 1) to Cu-58 (T-z = 0) by using the zero-degree (He-3,t) reaction at 150 MeV/nucleon. With the achieved resolution of 50 keV, many hitherto unresolved GT states have been identified. The GT transition strengths were obtained for states up to 8 MeV excitation, i.e., Dear to the Q window limitation (Q(EC) = 9.37 MeV) of the beta-decay from Zn-58 (T-z = -1) to Cu-58. The strength distribution is compared with that from shell-model calculations. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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