RADIATION FROM HIGH-PRESSURE PLASMAS

If the temperature dependence of the total radiation source strength and the continuum radiation source strength of a gas are known, the contribution of the line radiation can be determined. The investigation of the line factor L shows that it is independent of pressure over a wide temperature and pressure range. Therefore, to determine the total radiation source strength of a gas at high pressure, one need calculate only the continuum radiation at high pressure and use the measured or calculated line factor of the gas at atmospheric pressure. This method was applied to argon and the total radiation source strength u=F (temperature, pressure), in the range 9000≤T≤15 000°K and 1≤p≤100 atm was determined using the existing values measured at 1 atm. © 1968 The American Institute of Physics.