Abstract

We investigated six prospective explosive materials in the terahertz range using time-domain spectroscopy. A family of energetic azotetrazolate salts and two caged nitramines were studied. A number of distinct spectral features were observed in the 0.8–3.2 THz frequency range. In transmission configuration in ambient temperature, we determined the absorption coefficient and the refractive index of the materials, which were compressed as pellets. Because the visibility of some absorption peaks was not clear, additionally we performed characterization of these materials in a temperature range from 175°C to 0°C, which resulted in highlighting peaks with low amplitude. Because the considered explosives are insensitive to compression, we also measured them using an attenuated total reflection (ATR) technique, in which sample preparation is easier than with pressed pellets. The absorption peaks measured by ATR agree well with those determined in transmission. This suggests that ATR also can be used for identification of these classes of materials.

© 2016 Optical Society of America

Full Article  |  PDF Article
More Like This
Vibrational spectrum of γ-HNIW investigated using terahertz time-domain spectroscopy

Lantao Guo, Ying Hu, Yan Zhang, Cunlin Zhang, Yunqing Chen, and X.-C. Zhang
Opt. Express 14(8) 3654-3659 (2006)

Sensing the hygroscopicity of polymer and copolymer materials using terahertz time-domain spectroscopy

Jegathisvaran Balakrishnan, Bernd M. Fischer, and Derek Abbott
Appl. Opt. 48(12) 2262-2266 (2009)

Temperature-dependent terahertz spectroscopy and refractive index measurements of aqua-soluble and plastic explosives

Ganesh Damarla, M. Venkatesh, and A. K. Chaudhary
Appl. Opt. 57(29) 8743-8750 (2018)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics