Detection of neutrons and γ rays by a xenon pulsed ionization chamber
В. В. ДмитренкоMoscow Engineering Physics Institute (MEPhI), National Research Nuclear University, Kashirskoe sh. 31, Moscow, 115409, RussiaК. Ф. ВласикMoscow Engineering Physics Institute (MEPhI), National Research Nuclear University, Kashirskoe sh. 31, Moscow, 115409, RussiaV. M. GrachevMoscow Engineering Physics Institute (MEPhI), National Research Nuclear University, Kashirskoe sh. 31, Moscow, 115409, RussiaA. G. DukhvalovMoscow Engineering Physics Institute (MEPhI), National Research Nuclear University, Kashirskoe sh. 31, Moscow, 115409, RussiaС. Е. УлинMoscow Engineering Physics Institute (MEPhI), National Research Nuclear University, Kashirskoe sh. 31, Moscow, 115409, RussiaЗ. М. УтешевMoscow Engineering Physics Institute (MEPhI), National Research Nuclear University, Kashirskoe sh. 31, Moscow, 115409, RussiaA. E. ShustovMoscow Engineering Physics Institute (MEPhI), National Research Nuclear University, Kashirskoe sh. 31, Moscow, 115409, Russia
2012en
ABI
Аннотация
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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