Effect of plasma current on magnetohydrodynamic modes in neutral beam heated plasmas in compact helical system

Satoru Sakakibara, Hiroshi Yamada, Kazuo Toi, Akira Ejiri, Akira Ando, Harukazu Lguchi, Keisuke Matsuoka, Shigeru Morita, Osamu Motojima, Kiyohiko Nishimura, Shoichi Okamura, Kenji Tanaka1

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Effects of the net toroidal plasma currents on magnetohydrodynamic (MHD) modes have been investigated in neutral beam heated plasmas with the control of ohmic current. The characteristics of experimental observations are discussed in comparison with the calculated 3-D equilibria. The resonant modes are destabilized by the change of magnetic configuration due to the induced current in the co-direction. The modes with m/n = 2/l and 3/2 abruptly disappear at the specific current, which is consistent with the disappearance of the resonant surfaces. The behavior of these modes is phenomenologically consistent with that of the interchange mode.

Original languageEnglish
Pages (from-to)L252-L255
JournalJapanese journal of applied physics
Volume34
Issue number2
DOIs
Publication statusPublished - 1995 Feb
Externally publishedYes

Keywords

  • CHS
  • Interchange mode
  • MHD instability
  • Magnetic fluctuation
  • Ohmic heating current

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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    Sakakibara, S., Yamada, H., Toi, K., Ejiri, A., Ando, A., Lguchi, H., Matsuoka, K., Morita, S., Motojima, O., Nishimura, K., Okamura, S., & Tanaka1, K. (1995). Effect of plasma current on magnetohydrodynamic modes in neutral beam heated plasmas in compact helical system. Japanese journal of applied physics, 34(2), L252-L255. https://doi.org/10.1143/JJAP.34.L252