THE Tz = ±1 → 0 AND ±2 → ±1 MIRROR GAMOW-TELLER TRANSITIONS IN pf-SHELL NUCLEI

被引：5

作者：

Fujita, Y. ^{[1
,2
]}

Rubio, B. ^{[3
]}

Molina, F. ^{[3
,4
]}

Adachi, T. ^{[1
]}

Fujita, H. ^{[1
]}

Blank, B. ^{[5
]}

Ganioglu, E. ^{[6
]}

Gelletly, W. ^{[3
,7
]}

Orrigo, S. E. A. ^{[3
]}

机构：

[1] Osaka Univ, RCNP, Ibaraki, Osaka 5670047, Japan

[2] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan

[3] Univ Valencia, CSIC, IFIC, Valencia 46071, Spain

[4] Comis Chilena Energia Nucl, POB 188-D, Santiago, Chile

[5] Univ Bordeaux 1, Ctr Etud Nucl Bordeaux Gradignan, CNRS, IN2P3, F-33175 Gradignan, France

[6] Istanbul Univ, Dept Phys, TR-34134 Istanbul, Turkey

[7] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England

来源：

ACTA PHYSICA POLONICA B | 2016年 / 47卷 / 03期

关键词：

BETA-DECAY;

D O I：

10.5506/APhysPolB.47.867

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Gamow-Teller (GT) transitions are the most common weak-interaction processes in the Universe. They play important roles in various processes of nucleosynthesis, for example, in the rapid proton-capture process (rp-process). In the pf-shell region, the rp-process runs through neutron-deficient nuclei with T-z = -2, -1, and 0 mainly by means of GT and Fermi transitions, where T-z is the z component of isospin T defined by T-z = (N = Z)/2. Under the assumption of isospin symmetry, mirror nuclei with reversed Z and N numbers, and thus with opposite signs of T-z, have the same structure. Therefore, symmetry is also expected for the GT transitions starting from and ending up in mirror nuclei. We have been studying the T-z = -2 -> -1 and -1 -> 0 GT transitions in beta decays, while those from stable T-z = +2 and +1 nuclei by means of hadronic (He-3; t) charge-exchange (CE) reactions. The results from these studies are compared in order to examine the mirror-symmetry structure in nuclei. In addition, these results are combined for the better understanding of GT transitions in the pf-shell region.

引用

页码：867 / 881

页数：15

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