Open AccessОдномерное квазилинейное уравнение для описания генерации токов увлечения в плазме токамака геликонами
Author(s) -
А.Ю. Попов,
Е.З. Гусаков
Publication year - 2022
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2022.02.51916.19028
Subject(s) - fokker–planck equation , helicon , physics , landau damping , electron , distribution function , diffusion equation , diffusion , space (punctuation) , mathematical analysis , quantum electrodynamics , mathematics , differential equation , plasma , quantum mechanics , economy , service (business) , economics , linguistics , philosophy
A quasi-linear equation which allows describing evolution of electron distribution function and generation of non-inductive currents by helicons is obtained. It is shown that in the analysed case the Fokker-Planck equation can be approximated by a one-dimensional equation in the longitudinal electron velocity space with a diffusion coefficient proportional to the helicon power absorbed by electrons due to Landau damping.