Remote Sensing for the Detection of Explosives and Energetic Materials by 14N NQR and 14N NMR

Abstract

In this work, technical approaches for remote detection of explosives and energetic materials by N-14 NQR and NMR are presented. In the case of N-14 NQR, a problem of the detection of ammonium nitrate (AN) and AN-based explosives have been considered. Special accent is made on the technical solutions with use of cross-relaxation enhanced NQR. In the second part of the work, applications of N-14 NMR (TD-NMR) for detection of hazardous liquids are discussed. A method of the fast discrimination of dangerous liquids by the low-field N-14 NMR relaxation parameters have been proposed and tested using a set of energetic, toxic and electrolyte liquids. A surface coils for the detection of liquids in NMR is also studied.