Testing results of a microwave plasma generator (plasmatron) intended for e
xcitation of a strongly nonequilibrium plasma are presented. Nonequilibrium
properties of the plasma are described in detail. The plasma flame is form
ed at an open end of a coaxial line under atmospheric pressure. Argon is us
ed as plasma forming gas, and a 10 GHz CW magnetron with 10 W output power
is used for plasma excitation. The efficiency of absorption of microwave po
wer in the plasma is higher than 90% with specific absorbing capacity of 0,
4... 4 kW/cm(3).