Temperature-dependent far-infrared spectra of explosives and drugs measured by terahertz time-domain spectroscopy

被引：0
|
作者：
Fan, W. H. [1 ]
Burnett, A. [1 ]
Upadhya, P. C. [1 ]
Cunningham, J. [1 ]
Linfield, E. H. [1 ]
Davies, A. G. [1 ]
机构：
[1] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England
来源：
CONFERENCE DIGEST OF THE 2006 JOINT 31ST INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 14TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS | 2006年
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Using terahertz time-domain spectroscopy, we have measured the temperature dependence of the far-infrared vibrational modes of a number of illegal drugs and high explosives that are of interest to the forensic and security services. Well-resolved low-frequency absorption peaks were observed in the frequency range 0.3 - 3.0 THz and over the temperature range 4 - 296K, some of which were found to become more intense and shift to higher frequencies as the temperature was reduced. Our results confirm that the low-frequency collective modes are highly sensitive to the structural and spatial arrangement of molecules.
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页码：232 / 232
页数：1
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