Registration Number
0222U001255,
0120U102654
, R & D reports
Title
Special aspects of detection of fast neutrons by scintillation materials with large mass numbers.
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Head
Halunov Mykola Z., Доктор фізико-математичних наук
Ryzhikov Volodymyr D., Доктор фізико-математичних наук
Registration Date
26-01-2022
Organization
Institute for scintillation materials NAS Ukraine
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The physical mechanisms of interaction of fast neutrons with inorganic oxide materials have been studied; we proposed to use the additional mechanisms of interaction of fast neutrons with the substance of an oxide scintillator to increase the efficiency of fast neutrons detection. The phenomenological model of response to fast neutrons for oxide scintillators is proposed. The highly sensitive measuring set-up for detection of low-energy (energy E higher than 0.1 keV) cascade (multiple) gamma quanta has been developed. It was shown that the efficiency of detection of fast neutrons by oxide crystalline materials is significantly increased due to the registration of low-energy cascade gamma quanta, which are generated in the reactions of inelastic scattering, resonance scattering and resonance capture, as well as in the reaction of radiation capture on the middle nuclei. The contributions of the mechanisms of interaction of fast neutrons of Pu-Be source with the substance of oxide scintillators in the overall counting efficiency of detection were estimated. They are 15%, 62% and 23% for the mechanisms of inelastic scattering, resonance capture, and radiation capture, respectively. A new high-efficient fast neutron detector based on ZWO single crystal has been proposed.
Product Description
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Sidletskiy Oleg Tsezarevich
Tarasenko Oleh A.
Tupitsyna Іryna А.
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2022-03-09
