Terahertz study of 1,3,5-trinitro-s-triazine by time-domain and Fourier transform infrared spectroscopy

Abstract

Articles you may be interested inDynamics of the reactions of O(1D) with CD3OH and CH3OD studied with time-resolved Fourier-transform IR spectroscopy J. Chem. Phys. 137, 164307 (2012); 10.1063/1.4759619 Photolysis of n -butyl nitrite and isoamyl nitrite at 355 nm: A time-resolved Fourier transform infrared emission spectroscopy and ab initio study Terahertz time-domain studies of far-infrared dielectric response in 5 mol % MgO : LiNbO 3 ferroelectric single crystalThis letter describes the use of THz time-domain spectroscopy (TDS) applied in transmission to the secondary explosive 1,3,5 trinitro-s-triazine. Samples were also subjected to Fourier transform infrared spectroscopy over the same range for comparison. A detailed spectroscopy study is presented. General agreement between results from both methods confirms the absorption features found. A comparison study with computer molecular simulations shows that THz-TDS is sensitive to collective modes or vibrational modes of material.

Polarization orientation dependence of the far infrared spectra of oriented single crystals of 1,3,5-trinitro-S-triazine (RDX) using terahertz time–domain spectroscopy

“…Common energetic materials such as RDX, HMX, PETN, and TNT have unique spectral signatures in the <100 cm-l range. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. At visible wavelengths, many explosives look remarkably similar to common baking ingredients such as sugar or modeling clay but have unique signatures in the THz range.…”

A Novel Terahertz Sensing Device Comprising of a Parabolic Reflective Surface and a Bi-Conical Structure

“…The noise figure of THz detector by photoconductive antenna is high, so that a high signal to noise ratio (SNR) is required to extract the THz signal from the signal received. Parabolic mirrors have been widely used in THz systems to focus the weak THz power to the sample to increase the SNR [1][2][3][4][5][6]. On the other hand, a bi-conical structure has been widely used as a broadband radiation device with very high field concentration at gaps between the conical structure [12,13].…”

“…Typically, the sample material is located in the path way between a THz source and a detector. In this case, the sample material interacts with a THz wave from the source and the forward scattered wave is received by a THz detector [1,4,5]. Attenuated total reflection (ATR) is also introduced for THz sensing while the THz beam is redirected by a prism toward the sample material [3].…”

“…Terahertz (THz) sensing technology has received considerable attention in recent years for its potential applications in the detection of biological materials, skin cancer and spectral signature for molecular vibrations in RNA, DNA strands or proteins [1][2][3][4][5][6][7].…”

SUB-MILLIMETER WAVE FREQUENCY SCANNING 8 x 1 ANTENNA ARRAY

“…During the last decade, a large research effort has been dedicated to the development of sub-millimeter wave technology (300 GHz-3 THz), due to the large number of potential applications in different areas, such as terahertz imaging and sensing [1][2][3][4][5][6][7][8][9][10][11], wireless communications [12], radio-astronomy [13], fast measurement systems [14], non-destructive material analysis [15][16][17][18], or non-ionizing diagnosis [19][20][21][22], among others.…”