Abstract
The strong demand to isotopes for creation of the artificial MeV-energy electron antineutrino sources can be satisfied by \({}^{8}\)Li which is characterized by well defined and hard \(\bar{\nu}_{e}\) spectrum. The source can be produced at (\(n\), \(\gamma\))-activation of the starting \({}^{7}\)Li isotope. The availability and presence of large mass of \({}^{7}\)Li allow to construct as \(\bar{\nu}_{e}\)-source on the base of nuclear reactors (in steady state and dynamical mode of operation) as in tandem scheme of proton accelerators with heavy metal target. The accelerator variant is optimized in efficiency of \({}^{8}\)Li generation and in dimension that is exclusively important for investigation of oscillation in problem of sterile neutrino search in case of \(\Delta m^{2}\sim 1\) eV\({}^{2}\) scale. The analysis of \({}^{8}\)Li creation in the lithium blanket-converter allowed to decrease it outer size down to \({\sim}\)70 cm strongly decreasing the escape of neutrons from the source construction.
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Lyashuk, V.I. High Flux Electron Antineutrino Sources Based on Li-8 Isotope. The Possibility to Construct the Compact Variant. Phys. Atom. Nuclei 86, 1402–1410 (2023). https://doi.org/10.1134/S1063778824010344
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DOI: https://doi.org/10.1134/S1063778824010344