Study on the THz spectrum of methamphetamine | Zendy

Li Ning | Zendy; Jingling Shen | Zendy; Jinhai Sun | Zendy; Liang Lai-shun | Zendy; Xiaoyu Xu | Zendy; Meihong Lu | Zendy; Yan Jia | Zendy

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Study on the THz spectrum of methamphetamine

Author(s) -

Li Ning,

Jingling Shen,

Jinhai Sun,

Liang Lai-shun,

Xiaoyu Xu,

Meihong Lu,

Yan Jia

Publication year - 2005

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.13.006750

Subject(s) - terahertz radiation , terahertz spectroscopy and technology , absorption (acoustics) , spectroscopy , optics , density functional theory , materials science , absorption spectroscopy , attenuation coefficient , range (aeronautics) , spectral line , physics , quantum mechanics , astronomy , composite material

The spectral absorption features of methamphetamine (MA), one of the most widely consumed illicit drugs in the world, are studied experimentally by Terahertz (THz) time-domain spectroscopy (THz-TDS), and the characteristic absorption spectra are obtained in the range of 0.2 to 2.6 THz. The vibrational frequencies are calculated using the density functional theory (DFT). Theoretical results show significant agreement with experimental results, and identification of vibrational modes are given. The calculated results further confirm that the characteristic frequencies come from the collective vibrational modes. The results suggest that use of the THz-TDS technique can be an effective way to inspect for illicit drugs.

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