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Determination of the 14C Concentration in a Liquid Scintillator for a Neutrino Detector

  • Nuclear Experimental Technique
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Abstract

A setup has been developed for studying ultralow 14C concentrations in liquid scintillator samples for a large neutrino detector. The setup is located at the low-background underground laboratory of the Baksan Neutrino Observatory (Institute for Nuclear Research, Russian Academy of Sciences) at a depth of 4900 m of water equivalent. The 14C concentrations in a liquid scintillator based on linear alkyl benzene, the background counting rates, and the spectra of particle energies deposited in the technological scintillator sample have been measured. The ratio 14C/12C = (1.41 ± 0.12) × 10–16 has been obtained. A model of the γ-ray background has been developed, with which it is possible to extract the energy spectrum of 14C and reduce the systematic uncertainty of measurements.

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Authors and Affiliations

  1. National Research Nuclear University, Moscow Engineering Physics Institute, Moscow, 115409, Russia

    P. Yu. Naumov, E. D. Rovan & V. V. Sinev

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

    V. V. Sinev

Authors
  1. P. Yu. Naumov
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  2. E. D. Rovan
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  3. V. V. Sinev
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Correspondence to V. V. Sinev.

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Original Russian Text © P.Yu. Naumov, E.D. Rovan, V.V. Sinev, 2018, published in Pribory i Tekhnika Eksperimenta, 2018, No. 5, pp. 56–59.

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Naumov, P.Y., Rovan, E.D. & Sinev, V.V. Determination of the 14C Concentration in a Liquid Scintillator for a Neutrino Detector. Instrum Exp Tech 61, 680–683 (2018). https://doi.org/10.1134/S0020441218040231

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  • DOI: https://doi.org/10.1134/S0020441218040231

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