Hugoniot measurements of the 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) formulation T2 up to 70 GPa

Abstract

We present shock Hugoniot measurements of 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) T2 formulation up to 70 GPa. Despite the use of very thin samples, strong reactivity is evidenced above 30 GPa, indicating that our high pressure points are rather overdriven reaction product measurements than inert Hugoniot measurements. However, the comparison of these new high pressure Hugoniot data obtained on a TATB formulation with those previously obtained in a similar pressure range on single-crystal (SC) TATB samples allows us to decouple kinetics effects from the crystalline nature. Additional classical molecular dynamics simulations are performed to help understand the influence of imperfect hydrostatic conditions on SC TATB behavior at moderate and high pressures. The present data can be used to further improve existing models at very high pressures and to perform more conclusive high pressure Hugoniot experiments on both SC and formulated TATB samples.