Patent ID: 8058624
Filing Date: 2011-11-15
Classification: G01T

Abstract:
1. A method of detection of fast neutrons based on the mechanism of inelastic scattering of fast neutrons in a converter material, involving conversion of a cascade of gamma-quanta formed as a result of inelastic scattering of neutrons in the converter material with high atomic number into a set of light scintillations by a scintillator, processing of signals obtained in recording of said scintillations, formation of counting pulses with a frequency proportional to the neutron flux and their recording according to an appropriate algorithm, the improvement comprising: using inorganic scintillators with high atomic number, wherein: a material with high atomic number that is a constituent part of said inorganic scintillators is used as the converter material for ensuring inelastic scattering of fast neutrons; processing of the obtained signals is carried out by their integration with a time constant of at least 30 microseconds; and formation of the counting pulses is made by selection of the integrated signals in the energy range equivalent to 10-300 keV.