The onset of detonation behind incident shock waves in chlorine azide-argon mixtures
Abstract
Thermal stability conditions of chlorine-azide N3Cl diluted by argon were investigated. Pyrolysis was studied by the shock tube method. The reaction was monitored by emission techniques and shock velocities were measured from signals obtained with pressure microgages mounted flush with the inside wall. The critical temperature of decomposition behind the incident shock wave is not very dependent on mixture composition and pressure. Pyrolysis is complicated by a self-photolysis phenomenon initiated by species emitting from the heated gas downstream from the shock front through the unshocked gas. The effects of reaction exothermicity and shock strength on the wave velocities were investigated for different N3Cl + Ar mixtures. Above a minimum shock strength, coupling results between the reaction zone and the shock wave, from which the critical conditions for the onset of a detonation wave can be determined.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1983
- Bibcode:
- 1983STIN...8422921P
- Keywords:
-
- Azides (Organic);
- Chlorine Compounds;
- Detonation;
- Shock Waves;
- Thermal Stability;
- Exothermic Reactions;
- Photolysis;
- Pyrolysis;
- Fluid Mechanics and Heat Transfer