229 mTh+同分异构体寿命之谜的一种解决方案
A proposed solution for the lifetime puzzle of the 229mTh+ isomer
摘要:
以最有可能成为未来频率标准的229 Th核为例,分析了各种共振转换机制之间的相互作用和相互关系。因此,提出了一个解决方案,所谓的钍之谜,其中包括一个矛盾的实验和理论寿命的Th+离子。首先,该解决方案表明核异构体的寿命对环境条件的依赖性。第二,证明了单电子能级碎裂的拉平作用,这使得电子-核相互作用的共振放大更有可能。这两种趋势都导致理论寿命可能减少,与实验一致。
英文摘要:
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.
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