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arXiv · 2111.09292

Can we use heavy nuclei to detect relic neutrinos?

Oleksii Mikulenko·Yevheniia Cheipesh·Vadim Cheianov·Alexey Boyarsky
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Abstract

Recent analysis of the viability of solid state-based relic neutrino detectors has revealed the fundamental necessity for the use of heavy, $A>100$, $\beta$-decayers as neutrino targets. Of all heavy isotopes, $^{171}$Tm and $^{151}$Sm stand out for their sufficiently low decay energies, reasonable half-life times and stable daughter nuclei. However, the crucial bit of information, that is the soft neutrino capture cross-section is missing for both isotopes. The main reason for that is a particular type of $\beta$-decay, which precludes a simple link between the isotope's half-life time and the neutrino capture rate. Here we propose an experimental method to bypass this difficulty and obtain the capture cross-section of a soft neutrino by a given isotope from the isotope's $\beta$-spectrum.

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Oleksii Mikulenko, Yevheniia Cheipesh, Vadim Cheianov, Alexey Boyarsky. 2021-11-17. Can we use heavy nuclei to detect relic neutrinos?. https://doi.org/10.1140/epja/s10050-023-01121-5

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