Absorption of Radio Waves by Air Behind a Shock Wave

摘要

Results are given of experiments on the absorption of radio waves (10,000 mc) in a shock tube by air at temperatures from 2000 to 4000K. The time of establishment of equilibrium concentration of electrons is determined. Measured and calculated data on absorption of radio waves are compared. It is shown that in the zone of unequilibrium dissociation, possessing increased temperature and concentration of NO, no increased concentration of free electrons appear since the time of achievement of equilibrium concentration of electrons is commensurable with the time of achievement of equilibrium temperature and composition. (Author)