Investigation of shock initiation of desensitized RDX

The process of initiation of detonation of pressed desensitized RDX is considered. Pressure profiles were recorded by manganin gauges in different cross sections of a charge and processed by the Lagrange analysis for a reacting flow. The analysis has shown that the decomposition rate immediately behind the initiating wave front is low and increases with increase of pressure in it. A maximum in the dependence of the decomposition rate on the reaction coordinate can be observed when the values of the reaction coordinate are 0.4–0.6.