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Proceedings Paper

Influence of spatial differential reflection parameters on 2,4,6- trinitrotoluene (TNT) absorption spectra
Author(s): Thierry Dubroca; Gaël Guetard; Rolf E. Hummel
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Paper Abstract

Differential reflectometry has been shown to be a sensitive and fast tool to detect explosive substances on surfaces such as luggage and parcel. This paper elucidates the influence of several parameters on the sensitivity of the technique. An expression for the reflected intensity that contains the influence of angle of incidence, wavelength of the incident light, and surface roughness has been established. The feature used to identify and detect TNT stems mainly from the diffuse component of the reflected light. This spectral "finger-print" shape does not change by varying these parameters. The maximum sensitivity is obtained for samples which are strongly diffusive and weakly specular.

Paper Details

Date Published: 4 May 2012
PDF: 10 pages
Proc. SPIE 8358, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIII, 83581Y (4 May 2012); doi: 10.1117/12.918385
Show Author Affiliations
Thierry Dubroca, Univ. of Florida (United States)
Gaël Guetard, Univ. of Florida (United States)
Rolf E. Hummel, Univ. of Florida (United States)

Published in SPIE Proceedings Vol. 8358:
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIII
Augustus Way Fountain, Editor(s)

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