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arXiv 0903.5501nucl-th
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缺中子Kr和Sr同位素的形状混合和β衰变性质

Shape mixing and beta-decay properties of neutron-deficient Kr and Sr isotopes

P. Sarriguren

摘要:

在变形准粒子无规相近似下,研究了缺中子Kr和Sr同位素的Gamow-Teller强度分布和β衰变半衰期.该方法是基于一个自洽Skyrme Hartree-Fock平均场与配对相关和剩余的可分离的粒子-空穴和粒子-粒子的力量。一个简单的两能级模型被用来混合核的形状到物理基态。与实验吻合良好的形状混合系数,这是一致的,从旋转带的混合现象。

英文摘要:

Gamow-Teller strength distributions and beta-decay half-lives in neutron-deficient Kr and Sr isotopes are investigated within a deformed quasiparticle random phase approximation. The approach is based on a selfconsistent Skyrme Hartree-Fock mean field with pairing correlations and residual separable particle-hole and particle-particle forces. A simple two-level model is used to mix the nuclear shapes into the physical ground state. Good agreement with experiment is found with shape mixing coefficients which are consistent with those obtained phenomenologically from mixing of rotational bands.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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