Current-voltage characteristics of rf APGDs in argon excited at frequencies of (a) 6.78 and (b) 13.56 MHz. The inserted images show discharge appearance operating in corresponding mode.
The dependence of (a) breakdown voltage, oscillation amplitude, and (b) minimum discharge sustaining voltage of mode, mode transition voltage, and voltage in mode on excitation frequency.
Minimum discharge sustaining current of mode and mode transition current vs excitation frequency.
(a) Optical emission intensity at 705 nm and (b) gas temperature in mode at excitation frequencies of 6.78, 13.56, and 20.34 MHz.
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