Quantum cascade laser FM spectroscopy of explosives

Zach Gutmann; Trocia Clasp; Chris Lue; Tiffani Johnson; Taylor Ingle; Janet Jamison; Roger Buchanan; Scott Reeve

doi:10.1117/12.2015483

29 May 2013 Quantum cascade laser FM spectroscopy of explosives

Zach Gutmann, Trocia Clasp, Chris Lue, Tiffani Johnson, Taylor Ingle, Janet Jamison, Roger Buchanan, Scott Reeve

Proceedings Volume 8710, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIV; 87100J (2013) https://doi.org/10.1117/12.2015483
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

Polyisobutylene is an industrial polymer that is widely used in a number of applications including the manufacture of military grade explosives. We have examined the vapor emanating from a series of different molecular weight samples of polyisobutylene using high resolution Quantum Cascade Laser FM spectroscopy. The vapor phase spectra all exhibit a rovibrational structure similar to that for the gas phase isobutylene molecule. We have assigned the structure in the 890 cm^-1 and 1380 cm^-1 regions to the isobutylene ν₂₈ and ν₇ fundamental bands respectively. These spectroscopic signatures may prove useful for infrared sensing applications. Here we will present the infrared signatures along with recent GCMS data from a sample of C4, utilizing solid-phase microextraction vapor collection fibers, which confirm the presence of isobutylene as one of the volatile bouquet species in RDX-based explosives.

Citation Download Citation

Zach Gutmann, Trocia Clasp, Chris Lue, Tiffani Johnson, Taylor Ingle, Janet Jamison, Roger Buchanan, and Scott Reeve "Quantum cascade laser FM spectroscopy of explosives", Proc. SPIE 8710, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XIV, 87100J (29 May 2013); https://doi.org/10.1117/12.2015483

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