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Electron acceleration due to the synergetic effect of DC electric field and waves

The combined influence of two types of fast waves and a dc electric field, which is aligned with the ambient magnetic field, on electron distribution function is studied by numerical simulations. A quasi-linear operator models the electron Landau damping of any plasma eigenmodes: kinetic Alfvén, whistlers, and lower hybrid waves. For the description of weak collisional plasma processes, the 2D nonlinear kinetic Fokker-Planck equation is used. The distribution function structure, the electron current induced by waves, and the quantitative and qualitative aspects of runaway production are analyzed.