Contribution to problem of interaction between h-f electromagnetic field and plasma

Magnetoactive plasma is regarded as an anisotropic compressible dielectric. A thermodynamical method is used to solve the interaction of plasma with an h-f field which fully penetrates into it. Assuming isothermicity, the equilibrium state is reached in the minima of free energy. The case of cylindrical configuration is solved in detail; the equilibrium plasma frequencies are determined. The influence of electron collision frequency is analyzed.