EVALUATION OF PLASMA COMPOSITION AND MOBILITIES IN ARGON PLASMA WITH CHLORINE AS ADDITIVE

Results of numerical evaluation of equilibrium compositions and mobili ties in plasmas formed in the mixtures of argon and chlorine are given . The temperature dependence of the number densities of the components and their mobilities in function of temperature for low-pressure (fro m0, 1 kPa to 1, 0 kPa) and low-temperature (from 500 K to 5 000 K) arg on plasmas with 20% and 30% of added chlorine are evaluated. It is ass umed that the system is kept under constant pressure and that a corres ponding state of local themodynamical equilibrium is attained in it. A previously derived expression for the modified Debye radius, offering the possibility to treat the plasmas considered as weakly non-ideal i n the whole temperature range, is used and the cut-off at the Landau l ength rather than of the smallest of ionic radii is introduced. This a lteration in the evaluatin procedure brings different change in the fi nal numerical results for all the relevant quantities. It is found tha t the equilibrium plasma composition depends considerably on the prese nce of chlorine in the whole temperature range for both pressures; the addition of chlorine significantly enhances number densities of all r elevant charged constituents. This fact influences of the electron and ion collision frequencies and their mobilities too.