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Measurement of Radioactive Impurities in the \({}^{{51}}\)Cr Source by Photon Radiation in the BEST Experiment

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Abstract

The results of determination of impurities contained in an artificial neutrino source in the BEST experiment are presented. A \({}^{51}\)Cr source of activity 3.6 MCi was produced by exposing enriched chromium to thermal neutrons in a nuclear reactor. The amount of impurities was estimated by lines in the spectrum of photons from the source. It is shown that the contribution of radioactive isotopes associated with the impurities to the energy deposition in the source is negligible in relation to the energy deposition of \({}^{51}\)Cr. A high purity of the material from which the source was manufactured is demonstrated. The cross section for neutron capture by a number of elements is estimated.

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ACKNOWLEDGMENTS

We are grateful to V.A. Tarasov and A.I. Zvir from RIAR for particular attention to the problem of manufacturing the neutrino source used.

The work was carried out using scientific equipment of the UNU GGNT CCP BNO INR RAS with the financial support of the Ministry of Education and Science of the Russian Federation.

Funding

This work was supported by Ministry of Education and Science of Russian Federation under agreement no. 14.619.21.0009 (unique project identifier no. RFMEFI61917X0009) and agreement no. 05.621.21.0025 (unique project identifier no. RFMEFI62119X0025).

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Authors and Affiliations

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

    V. N. Gavrin, V. V. Gorbachev, T. V. Ibragimova & A. A. Shikhin

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  1. V. N. Gavrin
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  2. V. V. Gorbachev
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  3. T. V. Ibragimova
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  4. A. A. Shikhin
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Correspondence to V. V. Gorbachev.

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Gavrin, V.N., Gorbachev, V.V., Ibragimova, T.V. et al. Measurement of Radioactive Impurities in the \({}^{{51}}\)Cr Source by Photon Radiation in the BEST Experiment. Phys. Atom. Nuclei 86, 246–256 (2023). https://doi.org/10.1134/S1063778823030109

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  • DOI: https://doi.org/10.1134/S1063778823030109

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