Laser-induced breakdown spectroscopy and spectral analysis of improvised explosive materials

Amy J. R. Bauer; Michael P. Farrington; Kellen Sorauf; Andrzej W. Miziolek

doi:10.1117/12.2057930

21 May 2014 Laser-induced breakdown spectroscopy and spectral analysis of improvised explosive materials

Amy J. R. Bauer, Michael P. Farrington, Kellen Sorauf, Andrzej W. Miziolek

Proceedings Volume 9101, Next-Generation Spectroscopic Technologies VII; 91010M (2014) https://doi.org/10.1117/12.2057930
Event: SPIE Sensing Technology + Applications, 2014, Baltimore, MD, United States

Abstract

There exists an unmet need in the discovery and identification of certain improvised explosive (IE) materials. IE contain a wide range of materials, many of which are not well classified by available hand-held tools, especially metal powders and food products. Available measurement approaches are based in the identification of specific subgroups such as nitro/nitrate and chlorate/perchlorate, normally with Raman spectroscopy. The presence of metal powders is not detected by these approaches, and further the powders themselves scatter the laser radiation used in the excitation of the spectra, making other components more difficult to discern. Preliminary work with laserinduced breakdown spectroscopy (LIBS) shows that metal powders are easily detected and identified, and that fuel compounds in flash powder mixtures are easily classified with principal component analysis into those containing oxygen and chlorine or those containing oxygen and nitrogen. Alkali and alkali metal signals are readily used to determine the cation of any salt submitted to analysis.

Citation Download Citation

Amy J. R. Bauer, Michael P. Farrington, Kellen Sorauf, and Andrzej W. Miziolek "Laser-induced breakdown spectroscopy and spectral analysis of improvised explosive materials", Proc. SPIE 9101, Next-Generation Spectroscopic Technologies VII, 91010M (21 May 2014); https://doi.org/10.1117/12.2057930

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