Identification of high explosive RDX using terahertz imaging and spectral fingerprints

5th International Conference on Advances in Optoelectronics and Micro/Nano-optics

Liu, Jia^1,2 ; Fan, Wen-Hui^1 ; Chen, Xu^1,2 ; Xie, Jun^1,2

State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an

710119, China^1

Graduate University of Chinese Academy of Sciences, Beijing

100049, China^2

关键词: High explosives;    Polyethylene pellets;    Spectral fingerprints;    Terahertz frequencies;    Terahertz imaging;    Terahertz pulse;    Terahertz time domain spectroscopy;    THz frequencies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/680/1/012030/pdf
DOI  :  10.1088/1742-6596/680/1/012030

来源: IOP

【 摘 要 】

We experimentally investigated the spectral fingerprints of high explosive cyclo-1,3,5- trimethylene-2,4,6-trinitramine (RDX) in terahertz frequency region. A home-made terahertz time-domain spectroscopy ranging from 0.2 THz-; 3.4 THz was deployed. Furthermore, two sample pellets (RDX pellet and polyethylene pellet), which were concealed in an opaque envelop, could be identified by using terahertz pulse imaging system. For the purpose of distinguishing the RDX between two pellets, we further calculated the THz frequency -domain map using its spectral fingerprints. It is demonstrated that the high explosive RDX could similarly be identified using terahertz frequency-domain imaging.