抄録
Some examples of resonance phenomena in a magnetoplasma are investigated. First, the energy loss by a sequence of fast charges moving across the magnetic field is calculated. In the resonance regions where the ratio of the plasma frequency ω0 to the cyclotron frequency ωH satisfies certain conditions the energy-loss rate has a dominant term proportional to ln(v⁄vT). Here the velocity v of the charge of the sequence is assumed to be much larger than the thermal velocity, vT, of the plasma. Next, the energy loss by a charge gyrating in a plane perpendicular to the magnetic field is calculated. The rate in this case is the same as that of the first case in the off-resonance regions, while in the resonance regions there is a little difference between the two cases.
