Ion temperature increase during MHD events on the TST-2 spherical tokamak

A. Ejiri, S. Shiraiwa, Y. Takase, T. Yamada, Y. Nagashima, H. Kasahara, D. Iijima, Y. Kobori, T. Nishi, T. Taniguchi, M. Aramasu, S. Ohara, M. Ushigome, K. Yamagishi

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Various types of MHD events including internal reconnection events are studied on the TST-2 spherical tokamak. In weak MHD events no positive current spike was observed, but in strong MHD events with positive current spikes, a rapid and significant impurity ion temperature increase was observed. The decrease in the poloidal magnetic energy is the most probable energy source for ion heating. The plasma current shows a stepwise change. The magnitude of this step correlates with the temperature increase and is found to be a good indicator of the strength of each event.

Original languageEnglish
Pages (from-to)547-552
Number of pages6
JournalNuclear Fusion
Volume43
Issue number7
DOIs
Publication statusPublished - Jul 1 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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