Physical mechanism for the temperature dependence of lower hybrid current drive efficiency

H. Takase, Kunihiko Okano, Akiyoshi Hatayama

Research output: Contribution to journalArticle

12 Citations (Scopus)


The volume-averaged electron temperature (Te) dependence of lower hybrid current drive efficiency is investigated by a newly-developed numerical simulation code in the framework of a ray-tracing code and a one-dimensional relativistic Fokker-Planck calculation. As a result of numerical simulations, the current drive efficiency increases with (Te), and the dependence can be explained by the large shift of the parallel refractive index in the low-temperature region ((Te)<or=10 keV) and by the relativistic effect in the high-temperature region (10<(Te)<or= 20 keV). However, the current drive efficiency is not improved in the region higher than 20 keV.

Original languageEnglish
Article number002
Pages (from-to)749-762
Number of pages14
JournalPlasma Physics and Controlled Fusion
Issue number7
Publication statusPublished - 1991
Externally publishedYes


ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physics and Astronomy(all)

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