Method and system for detection of nitrogenous explosives by usi

Details Method and system for detection of nitrogenous explosives by usi Method and system for detection of nitrogenous explosives by usi

1989-06-22

1990-07-10

Church, Craig E.

X-ray or gamma ray systems or devices

Specific application

Mossbauer effect

378 53, 378 57, G01N 2304

Patent

active

049411624

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

REFERENCES:
patent: 3612875 (1971-10-01), Ord

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