Increase in ion temperature by slow wave heating in magnetosphere plasma device RT-1

Masaki Nishiura, Zensho Yoshida, Yoshihisa Yano, Yohei Kawazura, Toshiki Mushiake, Haruhisa Saitoh, Miyuri Yamasaki, Ankur Kashyap, Noriki Takahashi, Masataka Nakatsuka, Yuichi Takase, Atsushi Fukuyama

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Ion cyclotron range of frequencies (ICRF) heating with a frequency of a few MHz and an input power of 10kW was applied for the first time, to the best of our knowledge, in a magnetosphere plasma device. An antenna was installed near the pole of a dipole field for slow-wave excitation. Further, a ∩-shaped antenna was implemented and characterized for efficient ion heating. Electron cyclotron heating with an input power of 8kW sustained helium plasmas with a fill gas pressure of 3mPa. ICRF heating was then superimposed onto the target plasma (H, D, and He). While the ICRF power was turned on, the increase in ion temperatures was observed for low-pressure helium plasmas. However, the temperature increase was not clearly observed for hydrogen and deuterium plasmas. We discuss the experimental results in terms of power absorption based on result calculated with the TASK/WF2 code.

Original languageEnglish
Article number2402054
JournalPlasma and Fusion Research
Volume11
Issue numberSpecialissue1
DOIs
Publication statusPublished - 2016
Externally publishedYes

Keywords

  • High beta
  • Ion heating
  • Magnetosphere plasma
  • Slow wave

ASJC Scopus subject areas

  • Condensed Matter Physics

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