Complex impedance of nonisotermic plasma capacitor

The capacitance of a planar capacitor filled with nonisothermic collisional plasma was calculated in the hydrodynamic approximation. Resonant properties of the complex impedance of the capacitor were studied. It was shown that resonant absorption in the capacitor is caused by excitation of ion-acoustic oscillations, the excitation of electron Langmuir waves, and the geometric plasma resonance phenomenon in the low-, high-, and intermediate frequency regions, respectively.