Electron Heating by Self-Interaction of Bernstein Waves

抄録

When Bernstein waves (B waves) are excited in a magnetized plasma, the self-interaction of B waves by nonlinear Landau damping becomes a dominant mechanism for the electron heating of bulk plasma. This heating occurs only for B waves with relatively small k_⁄⁄, because the damping of the B wave itself becomes very small. This heating occurs in the relatively broad frequency range between ω⁄ω_c\simeq1.5 and ω⁄ω_c\simeq1.7 of B waves. For B waves with large k_⁄⁄(k_⁄⁄R>0.15), the fast tail electrons are generated by the quasi-linear cyclotron damping of the B wave itself. The efficiency of the generation of tail electrons is somewhat less than that for electron heating by self-interaction of B waves.