Electromagnetic enhanced ignition of octogen explosive at subnormal temperatures: A numerical study

The thermal decomposition and ignition of high-performance high explosives occur via a mechanism where the solid phase sublimes parent molecules decompose rapidly in gas to form unstable charged intermediates. These intermediates continue react final products release energy do work. We have observed that presence electromagnetic significantly reduces temperature common explosive, data suggest this occurs interactions with gas-phase Here, we modified kinetic expressions for octogen (High Melt eXplosive, HMX) couple effects an incident microwave (MW) field. This model is used investigate our previous experimental work which showed surface at HMX powder reduced by MW Fridman–Macheret α-model approach plasma chemistry was incorporated into Henson/Smilowitz kinetics; effectively activation (Ea) vibronically excited reactive A implemented COMSOL Multiphysics Software. time validated; as result, formation ∼23 °C compared ignition. With validated can simulate both pure mixed thermal/plasma ignition, are able showing initiation.