Nonclassical Detonation Regimes of Pressed and Liquid Explosives (Review)
A. V. Utkin1,2, V. M. Mochalova1,2
1Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432 Russia
2Tomsk State University, Tomsk, 634050 Russia
Keywords: detonation, Von Neumann spike, detonation wave structure, reaction zone without a Von Neumann spike, pressed explosives, liquid explosives, RDX, HMX, TNETB, PETN, nitromethane, nitromethane/diethylenetriamine mixture, tetranitromethane, FEFO
Abstract
This paper presents a review of studies of the characteristics of condensed explosives in the reaction zone of which the distribution of parameters does not correspond to the classical detonation theory. An increase in the pressure and particle velocity behind a shock in liquid explosives and the possiblity of the existence of a stationary detonation wave without a Von Neumann spike in pressed explosives are interpreted withi the framework of models that take into account the possibility of chemical reactions directly at the shock wave front. It is noted that in the absence of the Von Neumann spike, both Chapman-Jouguet detonation or an underdriven detonation regime can occur.
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