High-pressure Raman scattering and inelastic neutron scattering studies of triaminotrinitrobenzene

Raman spectroscopy study of laser-shocked tatb-based explosives

“…3. Up to 7 GPa, these modes exhibit an unusual pressure dependence as already mentioned by Satija et al [11]. Instead of increasing from ambient pressure δ NO 2 decreases and ν N-O remains constant.…”

A far- and mid-infrared study of HMX (octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine) under high pressure

“…We suspect that, based on earlier unpublished studies on various energetic and other organic crystals, this fluorescence may be due to structural/excitonic alterations within the sample and not due to chemical reactions. Laser-induced molecular damage has also been observed in studies of TATB [15,30] using Ar-ion laser beam wavelengths of 514.5 nm for excitation and must be considered as a possibility when conducting Raman spectroscopic studies of energetic materials.…”

“…Spectral data in the infrared region are complementary to data acquired using Raman spectroscopy thus our IR studies will aid in yielding a more complete spectral picture of vibrational mode behavior of this important explosive with pressure. Also, infrared radiation tends to be less damaging to some energetic materials than visible light (especially using 514.5 nm and lower wavelength light) [15,16].…”

Experimental and theoretical investigation of pressure-dependent Raman spectra of triaminotrinitrobenzene (TATB) at high pressures

“…Several experimental Raman pressure evolution studies [1][2][3][4] have already investigated possible phase transitions under pressure loading; but, none of these offer high fidelity of low frequency lattice modes out to high pressures. Despite this, at least one study [5] offers very compelling evidence that no first order polymorphic phase transition occurs up to 150 GPa.…”