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Pisma v Zhurnal Tekhnicheskoi Fiziki, 2022, Volume 48, Issue 2, Pages 24–26
DOI: https://doi.org/10.21883/PJTF.2022.02.51916.19028 (Mi pjtf7209) 		 
A 1D quasilinear equation describing the current drive excitation by helicons in a tokamak plasma

A. Yu. Popov, E. Z. Gusakov

Ioffe Institute, St. Petersburg, Russia
Full-text PDF (97 kB)
DOI: https://doi.org/10.21883/PJTF.2022.02.51916.19028
Abstract: A quasilinear equation which allows describing evolution of the electron distribution function and generation of non-inductive currents by helicons is obtained. It is shown that in the analyzed 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.
Keywords: tokamak, current drive, helicon, quasilinear diffusion
Funding agency Grant number
Ministry of Science and Higher Education of the Russian Federation 0040-2019-0023
0034-2021-0002
The total quasilinear equation for the distribution function in the case of helicon absorption was derived in the framework of the Ioffe Institute State Assignment 0040-2019-0023, the equation for a 1D electron distribution function was obtained under State Assignment 0034-2021-0002.
Received: 17.09.2021
Revised: 01.10.2021
Accepted: 01.10.2021
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: A. Yu. Popov, E. Z. Gusakov, “A 1D quasilinear equation describing the current drive excitation by helicons in a tokamak plasma”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 48:2 (2022), 24–26
Citation in format AMSBIB
\Bibitem{PopGus22}
\by A.~Yu.~Popov, E.~Z.~Gusakov
\paper A 1D quasilinear equation describing the current drive excitation by helicons in a tokamak plasma
\jour Pisma v Zhurnal Tekhnicheskoi Fiziki
\yr 2022
\vol 48
\issue 2
\pages 24--26
\mathnet{http://mi.mathnet.ru/pjtf7209}
\crossref{https://doi.org/10.21883/PJTF.2022.02.51916.19028}
\elib{https://elibrary.ru/item.asp?id=47276867}
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