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6 February 1997 Narcotics detection using piezoelectric ringing
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Proceedings Volume 2936, Physics-Based Technologies for the Detection of Contraband; (1997)
Event: Enabling Technologies for Law Enforcement and Security, 1996, Boston, MA, United States
Piezo-electric ringing (PER) has been demonstrated to be an effective means of scanning cargo for the presence of hidden narcotics. The PER signal is characteristic of certain types of crystallized material, such as cocaine hydrochloride. However, the PER signal cannot be used to conclusively identify all types of narcotic material, as the signal is not unique. For the purposes of cargo scanning, the PER technique is therefore most effective when used in combination with quadrupole resonance analysis (QRA). PER shares the same methodology as QRA technology, and can therefore be very easily and inexpensively integrated into existing QRA detectors. PER can be used as a pre-scanning technique before the QRA scan is applied and, because the PER scan is of a very short duration, can effectively offset some of the throughput limitations of standard QRA narcotics detectors. Following is a discussion of a PER detector developed by Quantum Manetics under contract to United States Customs. Design philosophy and performance are discussed, supported by results from recent tests conducted by the U.S. Drug Enforcement Agency and U.S. Customs.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Timothy J. Rayner, Erik E. Magnuson, Rebecca West, and R. Lyndquist "Narcotics detection using piezoelectric ringing", Proc. SPIE 2936, Physics-Based Technologies for the Detection of Contraband, (6 February 1997);


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