Shock Wave Initiation of Detonation

A shock wave, wdiich can be generated in various ways in an explosive, frequently serves as a tool for the initiation of explosives. The shock wave initiation mechanism is based on the formation of a dynamic compression zone immediately behind the shock wave front. In the zone due to the temperature rise, exothermic reactions begin to occur. 

The initiation mechanism of heterogeneous explosives (e.g., mixture-type of explosives) is somev at different compared to the initiation mechanism of the homogeneous explosives. 

The initiation mechanism of heterogeneous explosives is mainly the result of the local heating of an explosive, leading to the formation of hot spots due to 

The critical values of the shock wave pressure that may cause the initiation of heterogeneous explosives are 1-5 GPa, while the hot spot temperature is 700-800 K. 

The initiation of homogeneous explosives, for example, liquid explosives, may occur as a result of homogeneous heating in the ( namic compression zone. However, for successful initiation, the shock wave pressure should exceed 10 GPa, causing the hot spot temperature to rise up to 1000 K. 

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