A method of detecting devisible substances and explosives

The methods broadly used today includes radiation of a subject being investigated with pulse neutron rays generated by a pulse cluster of fast hydrogen ions from the target, and measurement of time & energy spectrums of a secondary neutron & gamma radiation emitted from this subject. The idea of the new method is to measure neutron & gamma radiation and the time pattern between the pulses to detect devisible substances. To find out explosives, during the pulses it’s proposed to measure the energy spectrum of instant gamma-radiation flux released under the reaction of an inflexible dessipation of fast neutrons on the nucleuses of the typical explosive components, namely, nitrogen, oxygen and carbon. At the neutron thermalization stage, in-between the pulses, the integral and power performance of gamma-radiation released under the reaction of radiative capture of slow and heat neutrons by nitrogen nucleuses, is measured. Thereafter, before the beginning of the next neutron radiation pulse, energy spectrum of gamma-radiation short-living radionuclides formed upon the interaction of neutrons with the explosives’ nucleuses is measured.

M. F. Vorogushin and associates

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