The Application of a Langmuir Type Probe and Microwave Diagnostic Technique to Transient Ionized Flows

摘要

Electron number densities were measured behind the incident shock wave in a pressure driven shock tube by a microwave resonant cavity technique and by electrostatic probes. The driven gas was air at initial pressures of .5 and 1mm Hg, and the shock Mach number was varied from 7 to 10. Electron neutral collision frequency was also determined by the microwave technique. The experimental measurements were compared with other measurements and with theory. (Author)