$^{208}$ Pb“东北”区禁戒$β^-$衰变性质的壳模型描述
Shell-model description for the properties of the forbidden $β^-$ decay in the region "north-east" of $^{208}$Pb
摘要：
在目前的工作中，我们报告了一个全面的壳模型研究的$\log ft$值的禁止$β^-$衰变跃迁在东北地区的$^{208}$铅。为此，我们考虑了$^{210-215}$ Pb $\rightarrow$ $^{210-215}$ Bi和$^{210-215}$ Bi $\rightarrow$ $^{210-215}$ Po跃迁。我们用KHPE相互作用在质子82-126价壳层和中子126-184价壳层中进行了壳模型计算。我们还计算了有关核的半衰期和Q值。最近，在CERN ISOLDE设施[Phys. Rev. C { \bf 104}，054301（2021）]观察到几个对应于$^{214}$ Bi $^m$的（8 $^-$）异构态的$β^-$衰变的$\log ft$值，并且我们首次报道了这些跃迁的壳模型结果。
英文摘要：
In the present work, we report a comprehensive shell-model study of the $\log ft$ values for the forbidden $β^-$ decay transitions in the north-east region of $^{208}$Pb. For this we have considered $^{210-215}$Pb $\rightarrow$ $^{210-215}$Bi and $^{210-215}$Bi $\rightarrow$ $^{210-215}$Po transitions. We have performed shell-model calculation using KHPE interaction in valence shell 82-126 for protons and 126-184 for neutrons without any truncation. We have also calculated half-lives and Q-values for the concerned nuclei. Recently several $\log ft$ values are observed corresponding to $β^-$ decay from (8$^-$) isomeric state of $^{214}$Bi$^m$ at CERN-ISOLDE facility [Phys. Rev. C {\bf 104}, 054301 (2021)], and for the first time we have reported shell-model results for these transitions.
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