Methodology for using active infrared spectroscopy in standoff detection of trace explosives

2017 ◽  
Author(s):  
Christopher J. Breshike ◽  
Christopher A. Kendziora ◽  
Robert Furstenberg ◽  
Viet Nguyen ◽  
R. Andrew McGill
Keyword(s):  
Infrared Spectroscopy ◽  
Standoff Detection ◽  
Trace Explosives

scholarly journals Deep Ultraviolet Standoff Photoacoustic Spectroscopy of Trace Explosives

2018 ◽  
Vol 73 (6) ◽  
pp. 601-609 ◽  
Author(s):  
Alyssa B. Zrimsek ◽  
Sergei V. Bykov ◽  
Sanford A. Asher
Keyword(s):  
Photoacoustic Spectroscopy ◽  
Signal Strength ◽  
Pentaerythritol Tetranitrate ◽  
Gaseous Species ◽  
Absorption Bands ◽  
Standoff Detection ◽  
Deep Ultraviolet ◽  
Deep Uv ◽  
Trace Explosives ◽  
The Impact

We demonstrate deep ultraviolet (UV) photoacoustic spectroscopy (PAS) of trace explosives using a sensitive microphone at meter standoff distances. We directly detect 10 µg/cm2 of pentaerythritol tetranitrate (PETN), 2,4,6-trinitrotoluene (TNT), and ammonium nitrate (AN) with 1 s accumulations from a 3 m standoff distance. Large PAS signals for standoff detection are achieved by exciting into the absorption bands of the explosives with a 213 nm laser. We also investigate the impact of the deep UV photochemistry of AN on the PAS signal strength and stability. We find that production of gaseous species during photolysis of AN enhances the PAS signal strength. This deep UV photochemistry can, however, limit the PAS signal lifetimes when detecting trace quantities.

Broadband infrared imaging spectroscopy for standoff detection of trace explosives

2016 ◽  
Author(s):  
Christopher A. Kendziora ◽  
Robert Furstenberg ◽  
Michael Papantonakis ◽  
Viet Nguyen ◽  
R. Andrew McGill
Keyword(s):  
Infrared Imaging ◽  
Imaging Spectroscopy ◽  
Standoff Detection ◽  
Trace Explosives

Advances in standoff detection of trace explosives by infrared photo-thermal imaging

2010 ◽  
Author(s):  
Christopher A. Kendziora ◽  
Robert Furstenberg ◽  
Michael Papantonakis ◽  
Viet Nguyen ◽  
Jennifer Stepnowski ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Standoff Detection ◽  
Trace Explosives

Infrared backscatter imaging spectroscopy for standoff detection of trace explosives

2019 ◽  
Author(s):  
Christopher J. Breshike ◽  
Christopher A. Kendziora ◽  
Yohan Yoon ◽  
Robert Furstenberg ◽  
Viet Nguyen ◽  
...  
Keyword(s):  
Imaging Spectroscopy ◽  
Standoff Detection ◽  
Trace Explosives

Rapid detection of infrared backscatter for standoff detection of trace explosives

2020 ◽  
Author(s):  
Christopher J. Breshike ◽  
Christopher A. Kendziora ◽  
Robert Furstenberg ◽  
Yohan Yoon ◽  
Tyler J. Huffman ◽  
...  
Keyword(s):  
Rapid Detection ◽  
Standoff Detection ◽  
Trace Explosives

Point and standoff detection of trace explosives using quantum cascade lasers

2014 ◽  
Author(s):  
Seonghwan Kim ◽  
Dongkyu Lee ◽  
Xunchen Liu ◽  
C. W. Van Neste ◽  
Thomas Thundat
Keyword(s):  
Quantum Cascade Lasers ◽  
Quantum Cascade ◽  
Standoff Detection ◽  
Trace Explosives ◽  
Cascade Lasers
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