Microscopic mechanisms leading to the ignition (initiation), 'hot spots' (initiation sites), deflagration, detonation in energetic materials

摘要

The initiation of single crystals of ADN (ammonium dinitramide), AP (ammonium perchlorate), HMX (cyclotetramethylene tetranitramine), RDX (cyclotrimethylene trinitramine) has been recorded/followed from the formation of microscopic " reaction sites" prior to the "hot spot" formation to the development of "hot spots" leading to full crystal deflagration. The detonation of granular HMX, fllowing deflagration, has been studied in a laser detonator. The experimental results/observations have given information leading to a fuller understanding of the microscopic mechanisms involved in the initiation, deflagration and detonation processes in energetic materials.