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

US4941162A · kind A · utility

Assignee

• The State of Israel, Atomic Energy Commission, Soreq nuclear Research Center · IL

Inventors

• David Vartsky · Yavne, IL
• Mark Goldberg · Rehovot, IL
• Amos Breskin · Nes Ziona, IL
• Gideon Engler · Rehovot, IL
• Aharon Goldschmidt · Nes Ziona, IL
• Ephraim Izak · Nesher, IL
• Ovadia Even · Givatayim, IL

Key dates

• Filing date: Jun 22, 1989
• Grant date: Jul 10, 1990
• Expiry date: Jun 22, 2009

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N23/095
• WIPO field: Measurement
• WIPO sector: Instruments

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.