On the possibility of current drive in tokamaks by Bernstein modes

A. G. Litvak; E. V. Suvorov; M. D. Tokman

doi:10.1016/0375-9601(94)90118-X

On the possibility of current drive in tokamaks by Bernstein modes

A. G. Litvak
, E. V. Suvorov
, M. D. Tokman

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Current drive in a tokamak by electrostatic electron Bernstein waves is investigated. It is shown that a sufficiently large refractive index of these waves may result in regimes of rf power dissipation in which the effect of electron trapping into "banana" orbits will be essentially diminished. Besides, a stronger (as compared with O- and X-modes) absorption of electrostatic electron Bernstein modes results in an rf power input into more energetic electrons which is also favourable for the increase of the current drive efficiency.

Original language	English
Pages (from-to)	64-67
Number of pages	4
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	188
Issue number	1
DOIs	https://doi.org/10.1016/0375-9601(94)90118-X
State	Published - 9 May 1994
Externally published	Yes

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N2 - Current drive in a tokamak by electrostatic electron Bernstein waves is investigated. It is shown that a sufficiently large refractive index of these waves may result in regimes of rf power dissipation in which the effect of electron trapping into "banana" orbits will be essentially diminished. Besides, a stronger (as compared with O- and X-modes) absorption of electrostatic electron Bernstein modes results in an rf power input into more energetic electrons which is also favourable for the increase of the current drive efficiency.

AB - Current drive in a tokamak by electrostatic electron Bernstein waves is investigated. It is shown that a sufficiently large refractive index of these waves may result in regimes of rf power dissipation in which the effect of electron trapping into "banana" orbits will be essentially diminished. Besides, a stronger (as compared with O- and X-modes) absorption of electrostatic electron Bernstein modes results in an rf power input into more energetic electrons which is also favourable for the increase of the current drive efficiency.

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On the possibility of current drive in tokamaks by Bernstein modes

Abstract

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