13 October 2010 Trace detection of nitrogen-based explosives with UV-PLF
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Trace detection of energetic materials is a method to screen personnel, packages and other items for concealed explosives. It is likely, that a person who carries explosives will contaminate himself and the package with the explosive. We present first results on the development of a compact detector combining Pulsed Laser Fragmentation (PLF) with fragments detection. A passively q-switched UV microchip laser photofragments surface contaminations. The concentration ratio of the fragments NO and NO2 is a sufficient indicator for the presence of nitrogen-based explosives. For TNT, the results suggest, that a surface density as small as a few ng/cm2 can be reliably detected.
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Jens-Uwe Guenther, Christian Bohling, Mario Mordmueller, Wolfgang Schade, "Trace detection of nitrogen-based explosives with UV-PLF", Proc. SPIE 7838, Optics and Photonics for Counterterrorism and Crime Fighting VI and Optical Materials in Defence Systems Technology VII, 783807 (13 October 2010); doi: 10.1117/12.865590; https://doi.org/10.1117/12.865590

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