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Cross Section of Solar Neutrino Capture by 76Ge Nuclei

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

The results are presented from calculating capture cross section σ(Eν) of solar neutrinos by 76Ge nuclei. Experimental data on strength function S(E), obtained in the charge-exchange 76Ge(3He, t)76As reaction, are used in these calculations. The effect the resonance structure of strength function S(E) has on cross section σ(Eν) is examined. It is shown that the giant Gamow–Teller resonance alone makes a contribution of ~20%, and the contribution of lower-lying excitations in the continuous spectrum part is even larger. These contributions must be considered in calculations for background events in experiments on double beta decay of the GERDA (LEGEND) type.

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ACKNOWLEDGMENTS

This work was supported by the Russian Foundation for Basic Research, grant no. 18-02-00670. It was performed as part of State Task no 3.3008.2017/PCh from the RF Ministry of Science and Education.

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Authors and Affiliations

  1. Moscow Institute of Physics and Technology (State University), 115184, Moscow, Russia

    A. K. Vyborov, L. V. Inzhechik, G. A. Koroteev & A. N. Fazliakhmetov

  2. Institute for Nuclear Research, Russian Academy of Sciences, 117312, Moscow, Russia

    A. K. Vyborov & A. N. Fazliakhmetov

  3. National Research Center Kurchatov Institute, 123182, Moscow, Russia

    Yu. S. Lutostansky & V. N. Tikhonov

Authors
  1. A. K. Vyborov
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  2. L. V. Inzhechik
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  3. G. A. Koroteev
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  4. Yu. S. Lutostansky
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  5. V. N. Tikhonov
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  6. A. N. Fazliakhmetov
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Correspondence to A. K. Vyborov.

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Translated by D. Safin

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Vyborov, A.K., Inzhechik, L.V., Koroteev, G.A. et al. Cross Section of Solar Neutrino Capture by 76Ge Nuclei. Bull. Russ. Acad. Sci. Phys. 83, 483–487 (2019). https://doi.org/10.3103/S1062873819040294

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  • DOI: https://doi.org/10.3103/S1062873819040294

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