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Atoms, Volume 12, Issue 5 (May 2024) – 1 article

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8 pages, 1546 KiB  
Article
External Radiation Assistance of Neutrinoless Double Electron Capture
by Vladimir N. Kondratyev and Feodor F. Karpeshin
Atoms 2024, 12(5), 27; https://doi.org/10.3390/atoms12050027 - 28 Apr 2024
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Abstract
The influence of electromagnetic radiation on nuclear processes is applied to an example of a neutrinoless double electron capture (0ν2ec). For cases with X-ray free-electron lasers (X-ray FELs) and/or inverse Compton X-ray sources, it was shown that such a decay can [...] Read more.
The influence of electromagnetic radiation on nuclear processes is applied to an example of a neutrinoless double electron capture (0ν2ec). For cases with X-ray free-electron lasers (X-ray FELs) and/or inverse Compton X-ray sources, it was shown that such a decay can be significantly enhanced by tuning the system to the resonant conditions through the absorption and/or emission of a photon with the decay resonance defect energy Δ. In this case, the 0v2ec decay rate Γ2e of nuclide Z grew linearly with field intensity (S/Sz) up to the X-ray flux power Sm~Z6, while Sz~Z6 (Γ/Δ)2 with decay width Γ of a daughter atom. For the case of 78Kr → 78Se − 0ν2eL1L1 capture we find Sz~109 W cm−2 and Sm~1017 W cm−2 which indicate a possibility of increasing decay rate to eight orders of magnitude or even larger. Full article
(This article belongs to the Section Nuclear Theory and Experiments)
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