Measurement of the Reflected Shock Hugoniot and Isentrope for Explosive Reaction Products

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Abstract
Measurement of the hydrodynamic state in an inert material adjacent to an interface with a detonating explosive yields a data point on the reflected shock Hugoniot of the explosive reaction products centered at the Chapman‐Jouguet state or on the isentrope below this state. Such measurements have been made, using various inert materials, for a range of shock impedances which yields pressures in the explosive reaction products from 515 000 bars down to 571 bars. The data fit a polytropic equation of state (P/ργ = const. for the isentrope) with γ = 2.77.