Observation of the pitch angle distribution of high-energy ions and their radial transport in the central cell of GAMMA10

Yasutaka Imai, Makoto Ichimura, Ryuya Ikezoe, Tatsuya Murakami, Toru Iwai, Takuro Yokoyama, Yumeto Ugajin, Tatsunori Sato, Tsuyoshi Imai

Research output: Contribution to journalArticle

Abstract

Suppression of the radial transport of the particles caused by low-frequency density fluctuations is one of the important subjects in the GAMMA10 tandem mirror. In GAMMA10, plasmas are mainly produced and heated with Ion Cyclotron Range of Frequency (ICRF) waves. The plasmas heated with ICRF waves have strong temperature anisotropy, because the ions are accelerated perpendicularly to the magnetic field line. In the GAMMA10 experiments, two types of low-frequency density fluctuations are observed; one is a drift-type fluctuation and the other is a flute-type fluctuation. In this paper, we study the radial transport of ICRF-produced high-energy ions which is caused by the low-frequency density fluctuations.

Original languageEnglish
Article number2402152
JournalPlasma and Fusion Research
Volume6
Issue number1 SPECIAL ISSUE
DOIs
Publication statusPublished - Dec 1 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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