CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Studies on 2,4-DNT Mixtures Using Reflection Terahertz Time Domain Spectroscopy for Explosives Detection |
ZHOU Zhen1,2, CHEN An-Tao1, FENG Li-Shuang2 |
1Applied Physics Laboratory, University of Washington, Seattle, WA, 98015, USA2School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083 |
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Cite this article: |
ZHOU Zhen, CHEN An-Tao, FENG Li-Shuang 2009 Chin. Phys. Lett. 26 037801 |
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Abstract Absorption spectra (0.2-1.8THz) of the mixtures of explosive 2,4-DNT and polyethylene(PE) at different ratios are obtained using reflection terahertz time domain spectroscopy (THz-TDS). The pronounced absorption peak of 2,4-DNT at 1.08THz is always observed for the mixtures with 2,4-DNT ratios above 20%. Experimental results demonstrate that more applicable and realistic THz-TDS in reflection geometry can be used to distinguish explosive mixed with other material having no THz fingerprints, and has a high potential in the detection of explosives.
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Keywords:
78.47.+p
07.57.-c
78.20.-e
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Received: 13 November 2008
Published: 19 February 2009
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PACS: |
78.47.+p
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07.57.-c
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(Infrared, submillimeter wave, microwave and radiowave instruments and equipment)
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78.20.-e
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(Optical properties of bulk materials and thin films)
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