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Proceedings Paper

Molecular signal as a signature for detection of energetic materials in filament-induced breakdown spectroscopy
Author(s): Matthew Weidman; Matthieu Baudelet; Matthew Fisher; Candice Bridge; Chris Brown; Michael Sigman; Paul J. Dagdigian; Martin Richardson
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Paper Abstract

Laser Induced Breakdown Spectroscopy (LIBS) by self-channeled femtosecond pulses is characterized for detection of energetic materials. Different polymers are spin coated on silicon wafers to provide a thin organic layer with controllable thickness ranging from 500 nm to 1 μm. Spectral analysis of atomic and molecular carbon emission shows CN molecular signal from samples that do not contain nitrogen. This can be explained by possible molecular recombination between native atomic carbon and atmospheric nitrogen. As a consequence, caution must be exercised when using spectral signatures based on CN emission for explosive detection by filament-induced LIBS.

Paper Details

Date Published: 8 May 2009
PDF: 7 pages
Proc. SPIE 7304, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing X, 73041G (8 May 2009); doi: 10.1117/12.820522
Show Author Affiliations
Matthew Weidman, College of Optics & Photonics, Univ. of Central Florida (United States)
Matthieu Baudelet, College of Optics & Photonics, Univ. of Central Florida (United States)
Matthew Fisher, College of Optics & Photonics, Univ. of Central Florida (United States)
Candice Bridge, College of Optics & Photonics, Univ. of Central Florida (United States)
Chris Brown, College of Optics & Photonics, Univ. of Central Florida (United States)
Michael Sigman, Univ. of Central Florida (United States)
Paul J. Dagdigian, The Johns Hopkins Univ. (United States)
Martin Richardson, College of Optics & Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 7304:
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing X
Augustus W. Fountain; Patrick J. Gardner, Editor(s)

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