Detection of neutrons and γ rays by a xenon pulsed ionization chamber

被引：5
|
作者：
Dmitrenko, V. V. [1 ]
Vlasik, K. F. [1 ]
Grachev, V. M. [1 ]
Dukhvalov, A. G. [1 ]
Ulin, S. E. [1 ]
Uteshev, Z. M. [1 ]
Shustov, A. E. [1 ]
机构：
[1] Natl Res Nucl Univ, Moscow Engn Phys Inst MEPhI, Moscow 115409, Russia
来源：
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES | 2012年 / 55卷 / 04期
关键词：
Xenon; Thermal Neutron; Neutron Capture; Radiative Capture; Sensitive Volume;
D O I：
10.1134/S0020441212030104
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The applicability of a xenon gamma-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 Xe-131(n, gamma)Xe-132* followed by emission of 668-keV gamma 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 gamma rays, which allows precise and high-efficiency identification of radioactive and fissile materials.
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页码：419 / 422
页数：4
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