Isospin decomposition of the Gamow-Teller strength in Cu-58

被引：48

作者：

Fujita, Y

Akimune, H

Daito, I

Fujiwara, M

Harakeh, MN

Inomata, T

Janecke, J

Katori, K

Nakada, H

Nakayama, S

Tamii, A

Tanaka, M

Toyokawa, H

Yosoi, M

机构：

[1] OSAKA UNIV, RCNP, IBARAKI, OSAKA 567, JAPAN

[2] KERNFYS VERSNELLER INST, 9747 AA GRONINGEN, NETHERLANDS

[3] UNIV MICHIGAN, DEPT PHYS, ANN ARBOR, MI 48109 USA

[4] CHIBA UNIV, DEPT PHYS, CHIBA 263, JAPAN

[5] UNIV TOKUSHIMA, DEPT PHYS, TOKUSHIMA 770, JAPAN

[6] KYOTO UNIV, DEPT PHYS, KYOTO 606, JAPAN

[7] KOBE TOKIWA JR COLL, KOBE 653, JAPAN

来源：

PHYSICS LETTERS B | 1996年 / 365卷 / 1-4期

关键词：

Ni-58; target; (He-3; t); good resolution; Gamow-Teller strength; fine structure; isospin; isospin structure;

D O I：

10.1016/0370-2693(95)01304-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Gamow-Teller (GT) strength excited by a (p, n)-type reaction on a nucleus with isospin T-0 and N > Z is shared by isospin components T-0- 1, T-0 and T-0+ 1. A good energy resolution (He-3, t) reaction on Ni-58 revealed the fine structure of (CU)-C-58. The isospin of each level constituting the fine structure was assigned by comparing to results from the GT strength in inelastic electron and proton scatterings and (n, p)-type reactions, thus resolving the isospin structure of the GT strength in Cu-58. The ratio of the summed GT strengths among the three isospin components is well described by a shell-model calculation.

引用

页码：29 / 34

页数：6

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