Shock Hugoniot measurements of single-crystal 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) compressed to 83 GPa

Abstract

We present laser-driven shock Hugoniot measurements of single-crystal (SC) 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) between 15 and 83 GPa, spanning pressures below and well above the Chapman–Jouguet pressure of ∼28 GPa for TATB formulations (TATB grains mixed with plastic binders at 5–10 wt. %). The new SC data are generally ∼3% more compressible than previously published data on neat and formulated TATB measured in gas-gun and explosive-driven experiments. An exception is at compressions in the density of ∼1.5 (∼30–40 GPa), where our new SC data exhibit significantly lower pressures than previous results on overdriven TATB formulations, suggesting that our SC samples remain largely unreacted below 35 GPa over the short nanosecond-time scales inherent to our laser-driven experiments. These novel equation-of-state measurements are a critical step toward understanding TATB in its most fundamental form and improving predictive modeling of TATB-based explosives.

High-Pressure Equation of State of 1,3,5-triamino-2,4,6-trinitrobenzene: Insights into the Monoclinic Phase Transition, Hydrogen Bonding, and Anharmonicity

“…1,3,5-triamino-2,4,6-trinitro-benzene (TATB) is a remarkable EM that exhibits two seemingly opposite characteristics of low sensitivity and high performance. Understanding the sensitivity of TATB is an active area of research. − As shown in Figure , TATB is packed as a layered molecular crystal with a skewed-hexagonal triclinic lattice in the P 1̅ space group with two TATB molecules in the unit cell . A TATB molecule consists of a benzene ring attached to alternating nitro and amino groups.…”

Phase transformation path in Aluminum under ramp compression; simulation and experimental study

“…This finding is consistent with a recent study on the Hugoniot equation of state of Al 26 . Interestingly, we note that previous experiments have shown insensitivity of the Hugoniot to the grain size and orientation of copper 41 , whereas the dependence on the form of the crystal/sample is strong for diamond 42 , silicon carbide 43 , and TATB 44 . This clearly implies different mechanisms in the response of different materials to dynamic compression that are likely closely related to their metallicity.…”

Phase Transformation Path in Aluminum Under Ramp Compression; Simulation and Experimental Study

“…This finding is consistent with a recent study on the Hugoniot equation of state of Al 25 . Interestingly, we note that previous experiments have shown insensitivity of the Hugoniot to the grain size and orientation of copper 26 , whereas the dependence on the form of the crystal/sample is strong for diamond 27 , silicon carbide 28 , and TATB 29 . This clearly implies different mechanisms in the response of different materials to dynamic compression that are likely closely related to their metallicity.…”