Abstract
The applicability of a xenon γ-ray spectrometer based on a high-pressure (50 atm) xenon cylindrical ionization chamber to thermal neutron detection is discussed. The reaction of radiative capture of thermal neutron capture 131Xe(n, γ)132Xe* followed by emission of 668-keV γ rays detectable by the spectrometer is used. The response of the xenon spectrometer with a sensitive volume of 0.2 L is analyzed. The measured thermal neutron detection efficiency is 0.08%. The advantage of the detector is its capability of simultaneously detecting both thermal neutrons and γ rays, which allows precise and high-efficiency identification of radioactive and fissile materials.
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Original Russian Text © V.V. Dmitrenko, K.F. Vlasik, V.M. Grachev, A.G. Dukhvalov, S.E. Ulin, Z.M. Uteshev, A.E. Shustov, 2012, published in Pribory i Tekhnika Eksperimenta, 2012, No. 4, pp. 3–6.
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Dmitrenko, V.V., Vlasik, K.F., Grachev, V.M. et al. Detection of neutrons and γ rays by a xenon pulsed ionization chamber. Instrum Exp Tech 55, 419–422 (2012). https://doi.org/10.1134/S0020441212030104
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DOI: https://doi.org/10.1134/S0020441212030104