“…Actually recombination is important if n > (D abm =L 2 p ), where is the coefficient of the electron-ion recombination, and Lp = L0L sh . When the background gas is argon at p = 3 torr, Lp 3 cm, D abm 10 4 cm 2 s 01 , and 10 11 cm 03 s 01 [12] n must exceed the value 10 13-14 cm 3 , which is far beyond the explored range of densities discharge parameters are: frequency MHz, half of the gap cm, argon pressure torr. The constants which were used for the calculations are: electron mobility m /V/s (at 1 torr), gas heat conductivity W/(cm K), K. For discharges in helium and argon, the Townsend coefficient is typically approximated in the form where are constants [1].…”