Title :
Investigation on THz fingerprint spectrum of illicit drugs
Author :
Shen, Jingling ; Sun, Jinhai ; Li, Ning ; Liang, Laishun ; Xu, Xiaoyu ; Liu, Haibo ; Zhang, Cunlin
Author_Institution :
Dept. of Phys., Capital Normal Univ., Beijing, China
Abstract :
The spectral absorption features of three amphetamine type stimulants (ATS) belonging to illicit drugs have been studied with terahertz time-domain spectroscopy (THz-TDS) and the characteristic absorption spectra (fingerprint spectra) are obtained ranging from 0.2THz to 2.5THz. To compare with the experimental results vibrational frequencies of MA are calculated, which is consistent with the experimental results. With the help of fingerprint spectra of illicit drugs and THz´s strong penetrability to cloths, paper bags and leathered or plastic luggage, THz-TDS would be a strong candidate for illicit drugs detection and inspection.
Keywords :
drugs; security; submillimetre wave spectroscopy; 0.2 to 2.5 THz; THz fingerprint spectrum; absorption spectra; amphetamine type stimulant; fingerprint spectra; illicit drugs; penetrability; terahertz time-domain spectroscopy; vibrational frequency; Absorption; Drugs; Fingerprint recognition; Frequency; Inspection; Laser beams; Laser excitation; Probes; X-ray detection; X-ray detectors;
Conference_Titel :
Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on
Print_ISBN :
0-7803-9348-1
DOI :
10.1109/ICIMW.2005.1572538
