A＝147—153核的Gamow—Teller跃迁

Gamow-Teller Transitions of Nuclei With A=147-153

在壳模型的基础上系统研究了１４６Ｇｄ区Ａ＝１４７－１５３核的Ｇａｍｏｗ－Ｔｅｌｌｅｒ跃迁．这些相对１４６Ｇｄ核心为粒子态的核唯一的β允许衰变道为π１ｈ１１／２→ｖ１ｈ９／２的Ｇａｍｏｗ－Ｔｅｌｌｅｒ跃迁．计算结果表明，实验的约化几率Ｂ（ＧＴ）与计算的Ｂ（ＧＴ）比较，存在一个阻塞因子γ２，即γ２＝Ｂｅｘｐ（ＧＴ）／Ｂｃａｌ（ＧＴ）＝０．１７±０．０５．

In this paper the Gamow-Teller transitions are systematically investigated fornuclei with A=147-1.53 in terms of the shell-model. These nuclei have only GTdecay channel π1h11/2→v1h9/2. The overall comparisons of the experimental reducedprobabilities Bexp(GT) .with the calculated Bcal(GT) show that there is a quenchingfactor γ2 with optimum value 0.17±0.05 in this mass region.