Spectral and angular dependence of mid-infrared diffuse scattering from explosives residues for standoff detection using external cavity quantum cascade lasers
Journal Article
·
· Applied Physics B. Lasers and Optics, 108(4):965-974
We present a study of the spectral and angular dependence of scattered mid-infrared light from surfaces coated with explosives residues (TNT, RDX, and tetryl) detected at a 2 meter standoff distance. An external cavity quantum cascade laser provided tunable illumination between 7 and 8 µm. Important differences were identified in the spectral features between specular reflection and diffuse scattering which will impact most practical testing scenarios and complicate material identification. We discuss some of the factors influencing the dependence of observed spectra on the experimental geometry.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1079133
- Report Number(s):
- PNNL-SA-85250
- Journal Information:
- Applied Physics B. Lasers and Optics, 108(4):965-974, Journal Name: Applied Physics B. Lasers and Optics, 108(4):965-974
- Country of Publication:
- United States
- Language:
- English
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