Drug and tobacco detection using neutron transmission/attenuation

Thomas Gill Miller

doi:10.1117/12.189196

6 October 1994 Drug and tobacco detection using neutron transmission/attenuation

Thomas Gill Miller

Proceedings Volume 2276, Cargo Inspection Technologies; (1994) https://doi.org/10.1117/12.189196
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

A neutron transmission/attenuation spectrometer has been used to obtain the neutron attenuation signature of cocaine, heroin, hashish, methamphetamine, pipe tobacco and chewing tobacco. A pulsed `white neutron' source was created by bombarding a thick beryllium target with a 5 MeV pulsed deuteron beam. The neutron intensity was measured from about 0.75 MeV to about 4 MeV with the suitcase in and out of the neutron beam to determine the neutron attenuation. Experiments were performed for drugs and tobacco alone and when imbedded in an `average suitcase'. The experimentally determined neutron attenuation curves were used to determine the atomic ratios C/O, N/O, and H/C through the samples using measured neutron cross sections.

Citation Download Citation

Thomas Gill Miller "Drug and tobacco detection using neutron transmission/attenuation", Proc. SPIE 2276, Cargo Inspection Technologies, (6 October 1994); https://doi.org/10.1117/12.189196

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