Abstract
In our laboratory, in order to investigate the fundamental characteristics of radiation behind reflected air shock waves, shock tube experiments are performed systematically. The radiation behind the shock wave was observed by a high-speed video camera. The composed chemical species behind the shock waves were examined by using several kinds of narrow band-pass filters. Also, we analyzed the radiation spectra by using the fundamental radiation theory on a trial basis, and we compared qualitatively the theoretical results with the experimental ones. As the results, the experimental radiation intensity was increased with an increase in the incident shock Mach number for all the cases with the narrow band-pass filters such as atomic nitrogen and oxygen lines. The theoretical radiation spectra in the visible and the longer wavelength regions had several atomic nitrogen and oxygen lines. These theoretical atomic lines were much weaker than those spectra of the molecular band systems. The experimental results were extremely high compared qualitatively with the theoretical ones.
