Quasilinear modification of the ion distribution function in the presence of ion Bernstein waves in tokamak plasma
Popov A. Yu. 1, Teplova N. V.1,2
1Ioffe Institute, St. Petersburg, Russia
2Peter the Great Saint-Petersburg Polytechnic University, St. Petersburg, Russia
Email: a.popov@mail.ioffe.ru
In this paper, a quasilinear equation is derived that describes the evolution of the ion distribution function due to the ion Bernstein waves of intermediate frequency range. It is shown that the quasilinear equation can be reduced approximately to a one-dimensional equation in the space of transverse ion velocities, and the diffusion coefficient is proportional to the wave's power absorbed. Keywords: ion Bersnstein wave, quasilinear diffusion.
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