Electromagnetic oscillations of the TM type in a cylindrical resonator with a gas-discharge plasma

The problem of electromagnetic waves of the TM type in a cylindrical resonator containing a gas-discharge plasma is solved. The heterogeneity of the plasma along a section, the finite thickness of the wall of the gas-discharge tube, and the loss in the plasma and wall are considered. Typical equations are obtained which may be used to determine the plasma parameters from measured values of the resonator characteristics. The possibility of selecting optimum conditions for diagnosing and for determining the coefficient of plasma heterogeneity along a section by changing the wall thickness of the dielectric tube containing the plasma is considered