Interaction of solar neutrinos with ${}^{98,100}$Mo isotopes and the influence of nuclear resonances

Abstract

The process of neutrino interaction with ${}^{98}$Mo and ${}^{100}$Mo isotopes is studied taking into consideration the effect of charge-exchange resonances. The experimental data on the strength functions $S(E)$ obtained in charge-exchange reactions $(p;n)$ and ${(}^3\mathrm{He},t)$ and the strength functions $S(E)$ calculated within the theory of finite Fermi systems were used. We studied the effect of the resonance structure of $S(E)$ on the cross sections for solar-neutrino. We investigated the contribution of each high-lying resonance to the capture cross section $\sigma (E_{\nu })$. The contributions of all components of the solar neutrino spectrum are calculated. We estimate the contribution of different components of solar neutrinos as the background for the double-beta decay experiments on ${}^{100}$Mo.

Comments: 17 pages, 7 figures