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A proposed solution for the lifetime puzzle of the 229mTh+ isomer
Nuclear Physics A ( IF 1.7 ) Pub Date : 2021-03-12 , DOI: 10.1016/j.nuclphysa.2021.122173
F.F. Karpeshin , M.B. Trzhaskovskaya

With the example of the 229Th nucleus, which is the most likely candidate for the creation frequency standard of a future, the dynamics of the interplay and the relationship of various resonance conversion mechanisms is analyzed. As a result, a solution is proposed for the so-called thorium puzzle, which consisted of a contradiction between the experimental and theoretical lifetimes of Th+ ions. First, the solution demonstrates the dependence of the lifetime of the nuclear isomer on the ambient conditions. Second, it demonstrates the leveling role of the fragmentation of the single-electron levels, which makes the resonance amplification of the electron-nuclear interaction more likely. Both of these trends lead to a probable decrease of the theoretical lifetime towards agreement with experiment.



中文翻译:

为解决方案的寿命难题而提出的解决方案 229Th +异构体

229 Th核为例,它是未来创建频率标准的最可能候选者,分析了相互作用的动力学以及各种共振转换机制之间的关系。结果,提出了一种解决方案,解决了所谓的or难题,该方案包括Th +的实验寿命与理论寿命之间的矛盾。离子。首先,该解决方案证明了核异构体的寿命与环境条件有关。其次,它证明了单电子能级断裂的平整作用,这使电子-核相互作用的共振放大更有可能。这两种趋势都会导致理论寿命可能会减少,从而与实验一致。

更新日期:2021-03-16
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