GAMOW-TELLER BETA-DECAY AND ISOSPIN IMPURITY IN NUCLEI NEAR THE PROTON DRIP-LINE

被引：66

作者：

HAMAMOTO, I

SAGAWA, H

机构：

[1] UNIV AIZU, CTR MATH SCI, FUKUSHIMA 965, JAPAN

[2] LUND INST TECHNOL, DEPT MATH PHYS, S-22007 LUND, SWEDEN

来源：

PHYSICAL REVIEW C | 1993年 / 48卷 / 03期

关键词：

D O I：

10.1103/PhysRevC.48.R960

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

It is shown that ''superallowed'' Gamow-Teller (GT) beta decays are possible for N=Z nuclei heavier than Ni-56(28)28 performing Hartree-Fock plus random phase approximation (Tamm-Dancoff approximation) calculations. Since Fermi-type beta decays are forbidden in N=Z even-even nuclei, it is pointed out that the main decay mode of the nuclei such as Sn-100(50)50 may be ''superallowed'' GT beta decay, which is a beta decay to the GT giant resonance state. The amplitude of isospin T=1 admixed to the T=0 ground state in N=Z nuclei is also calculated and discussed.

引用

页码：R960 / R963

页数：4

共 17 条

[1] NUCLEAR GROUND-STATE PROPERTIES AND SELF-CONSISTENT CALCULATIONS WITH SKYRME INTERACTION .1. SPHERICAL DESCRIPTION [J].