抄録
By assuming the spatial variation of electron density and introducing the inner field of plasma, the microwave generation of harmonics in the presence of a static magnetic field is analysed. By solving the Boltzmann and Poisson equations with use of the perturbation technique, the distribution function of electrons, the inner electric field strength and the current density of the harmonics are obtained for the special cases. It is found that the output power of the second harmonic does not vanish even when the plasma has a complete geometrical symmetry and that the resonance which maximizes the output of the second harmonic occurs when the frequency of microwave ω is nearly equal to the cyclotron frequency ωc.