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Proceedings Paper

Chemical and explosive detection with long-wave infrared laser induced breakdown spectroscopy
Author(s): Feng Jin; Sudhir B. Trivedi; Clayton S. Yang; Ei E. Brown; Eric Kumi-Barimah; Uwe H. Hommerich; Alan C. Samuels
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Paper Abstract

Conventional laser induced breakdown spectroscopy (LIBS) mostly uses silicon-based detectors and measures the atomic emission in the UV-Vis-NIR (UVN) region of the spectrum. It can be used to detect the elements in the sample under test, such as the presence of lead in the solder for electronics during RoHS compliance verification. This wavelength region, however, does not provide sufficient information on the bonding between the elements, because the molecular vibration modes emit at longer wavelength region. Measuring long-wave infrared spectrum (LWIR) in a LIBS setup can instead reveal molecular composition of the sample, which is the information sought in applications including chemical and explosive detection and identification. This paper will present the work and results from the collaboration of several institutions to develop the methods of LWIR LIBS for chemical/explosive/pharmaceutical material detection/identification, such as DMMP and RDX, as fast as using a single excitation laser pulse. In our latest LIBS setup, both UVN and LWIR spectra can be collected at the same time, allowing more accurate detection and identification of materials.

Paper Details

Date Published: 12 May 2016
PDF: 8 pages
Proc. SPIE 9824, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XVII, 98240Q (12 May 2016); doi: 10.1117/12.2223427
Show Author Affiliations
Feng Jin, Brimrose Corp. of America (United States)
Sudhir B. Trivedi, Brimrose Corp. of America (United States)
Clayton S. Yang, Battelle Eastern Science and Technology Ctr. (United States)
Ei E. Brown, Hampton Univ. (United States)
Eric Kumi-Barimah, Hampton Univ. (United States)
Uwe H. Hommerich, Hampton Univ. (United States)
Alan C. Samuels, U.S. Army Edgewood Chemical Biological Ctr. (United States)


Published in SPIE Proceedings Vol. 9824:
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XVII
Augustus Way Fountain III, Editor(s)

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