Novel Approach toMo93mIsomer Depletion: Nuclear Excitation by Electron Capture in Resonant Transfer Process,Physical Review Letters

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Novel Approach toMo93mIsomer Depletion: Nuclear Excitation by Electron Capture in Resonant Transfer Process
Physical Review Letters ( IF 8.1 ) Pub Date : 2021-07-21 , DOI: 10.1103/physrevlett.127.042501
J Rzadkiewicz ₁ , M Polasik ₂ , K Słabkowska ₂ , Ł Syrocki ₂ , J J Carroll ₃ , C J Chiara ₃

Affiliation

A novel approach for isomer depletion in ion-atom collisions is proposed and considered theoretically. Analyses are performed for the depletion of the

{}^{93 m}{Mo}

isomer for which an unexpectedly large probability was measured in the beam-based experiment of Chiara et al. [Nature (London) 554, 216 (2018)]. The subsequent attempt at a theoretical description based on state-of-the-art atomic theory did not reproduce the experimental result [Wu et al., Phys. Rev. Lett. 122, 212501 (2019)] and showed a dramatic disagreement with the experiment (by many orders of magnitude). This conflict calls for further research on the nature of isomer depletion mechanisms occurring in atomic processes. Here, we propose to consider the

{}^{93 m}{Mo}

isomer depletion as the nuclear excitation by electron capture in resonant transfer process taking into account the momentum distribution of the target electrons. Although our results only slightly shift the upper theoretical limit for the total

{}^{93 m}{Mo}

isomer depletion probability toward the experimental value, they show the importance of considering the Compton profile in the theoretical description, in particular for the

L

shell, for which the depletion probability increases by many orders of magnitude.

中文翻译：

Mo93m 异构体消耗的新方法：在共振转移过程中通过电子捕获进行核激发

提出并在理论上考虑了一种在离子-原子碰撞中消耗异构体的新方法。分析是为了消耗

{}^{93 米}莫

在 Chiara等人的基于光束的实验中测量了出乎意料的大概率的异构体。[自然 (伦敦) 554 , 216 (2018)]。随后尝试基于最先进的原子理论进行理论描述并没有重现实验结果 [Wu et al. ，物理。牧师莱特。 122 , 212501 (2019)] 并显示出与实验的巨大分歧（许多数量级）。这种冲突要求进一步研究原子过程中发生的异构体消耗机制的性质。在这里，我们建议考虑