Method and system for detection of nitrogenous explosives by using nuclear resonance absorption

摘要

A method for the detection of a nitrogenous explosive material (6) in an object (5) is provided which makes use of nuclear resonance absorption. The object to be tested (5) is placed between a 9.17 MeV γ-rays source (1) and an γ-rays detector (3) holding a nitrogen medium. The total and the non-­resonant attenuation of the γ-rays flux (2) is read by the detector (3) and fed into a recorder (4). From the measured attenuation the net non-resonant attenuation is calculated and the amount of a nitrogenous explosive (6) present in the object (5) is determined therefrom.;Also provided by the invention is a system for detecting a nitrogenous explosive in an object.