Reflection terahertz time-domain spectroscopy of RDX and HMX explosives
Abstract
We report on our study of RDX and HMX, two of the most commonly used explosive materials, in bulk pellets with reflection terahertz time-domain spectroscopy in the frequency range of 0.3–3 THz. The maximum entropy method was utilized to correct our raw reflection data against the phase error due to the relative displacement between the sample and the reference. Both the refractive index n and the extinction coefficient k in the terahertz region were acquired for these two explosives without a Kramers-Kronig analysis. Both RDX and HMX exhibit a series of distinct peaks not quite detectable in the more conventional transmission-type measurements due to their high terahertz absorptivity. Our results are compared with the literature data on powder samples.
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The cross-correlation technique is used to find the similarity between two input signals as a function of time to identify lag applied to one of the signals.
“The cross-correlation technique is used to nd the similarity between two input signals as a function of time to identify lag applied to one of the signals [19,20].”
From Cross-correlation technique for phase error correction in reflection mode terahertz time-domain spectroscopy (2024) · cites this paper as [20]
The cross-correlation function's peak value indicates the best match or highest similarity between the signals, and the argument of the maximum determines the time delay between them.
“The peak value of the correlation function indicates the best match or highest similarity between the signals.”
From Cross-correlation technique for phase error correction in reflection mode terahertz time-domain spectroscopy (2024) · cites this paper as [20]
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Terahertz absorption spectra of commonly used antimalarial drugs
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- Authors
- Choi, K., Hong, T., Ik Sim, K., Ha, T., Cheol Park, B., Hyuk Chung, J., Gyeong Cho, S., & Hoon Kim, J.
- Affiliations
- Yonsei University (KR)
- Department of Physics and Institute of Physics and Applied Physics, Yonsei University 1 , Seoul 120-749, South Korea
- Defense Advanced R&D Institute, Agency for Defense Development 2 , P.O. Box 35, Yuseong, Daejeon305-600, South Korea
- Venue
- Journal of Applied Physics
- Publisher
- AIP Publishing
- Published
- 2014-01-10
- Volume
- 115
- Issue
- 2
- ISSN
- 0021-8979 (ISSN-L)
- 1089-7550
- OpenAlex
- W1988556620
- Cited by
- 59
- References
- 14
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 4 · 2023: 4 · 2022: 5 · 2021: 1 · 2020: 5 · 2019: 4 · 2018: 6 · 2017: 8 · 2016: 9 · 2015: 5 · 2014: 3
- FWCI
- 4.43
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Applied Physics (publishedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
- Physical Sciences › Engineering › Mechanics of Materials › Energetic Materials and Combustion
- Physical Sciences › Chemistry › Spectroscopy › Spectroscopy and Laser Applications
- Keywords
- RDX, HMX, explosives, refractive index, extinction coefficient, powder sample
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