Standoff imaging of chemicals using IR spectroscopy

Conference · Fri Dec 31 23:00:00 EST 2010

OSTI ID:1015709

Senesac, Larry R ^[1]; Thundat, Thomas George ^[1]; Morales Rodriguez, Marissa E ^[1]

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1. ORNL

Here we report on a standoff spectroscopic technique for identifying chemical residues on surfaces. A hand-held infrared camera was used in conjunction with a wavelength tunable mid-IR quantum cascade laser (QCL) to create hyperspectral image arrays of a target with an explosive residue on its surface. Spectral signatures of the explosive residue (RDX) were extracted from the hyperspectral image arrays and compared with a reference spectrum. Identification of RDX was achieved for residue concentrations of 20 g per cm2 at a distance of 1.5 m, and for 5 g per cm2 at a distance of 15 cm.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: ORNL work for others
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1015709
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
CAMERAS
EXPLOSIVES
IR spectroscopy
LASERS
RESIDUES
SECURITY
SPECTROSCOPY
Standoff detection
TARGETS
WAVELENGTHS
explosives detection
quantum cascade lasers