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Proceedings Paper

Liquid explosives detection in transparent containers
Author(s): M. Gaft; L. Nagli
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Paper Abstract

The principal possibility to recognize liquid explosives and their components in various glass and plastic containers with different transparency in visible spectral range was demonstrated. Acetone was used as a target, as alone and mixed with traditional liquids. The advantage of gated Raman spectroscopy over the CW was proved. It was found that using 532 nm, 6 ns laser pulses any real target with characteristic Raman spectrum with intensity similar to those for acetone may be detected in 100 % of glass and in 80 % of plastic containers. The mixing with different liquid makes detection more difficult and acetone was detected in 55 % of studied cases. The main reasons for detection difficulties are intrinsic Raman and luminescence of plastic containers and liquids relevant to airport passengers. In case of strong luminescence the advantages of red light excitation over green light was demonstrated.

Paper Details

Date Published: 29 April 2010
PDF: 19 pages
Proc. SPIE 7664, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XV, 76641N (29 April 2010); doi: 10.1117/12.852543
Show Author Affiliations
M. Gaft, Laser Distance Spectrometry (Israel)
L. Nagli, Laser Distance Spectrometry (Israel)
Tel Aviv Univ. (Israel)

Published in SPIE Proceedings Vol. 7664:
Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XV
Russell S. Harmon; John H. Holloway Jr.; J. Thomas Broach, Editor(s)

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