論文

2019年5月

Observation of a beam-driven low-frequency mode in Heliotron J

NUCLEAR FUSION
  • L. G. Zang
  • ,
  • S. Yamamoto
  • ,
  • D. A. Spong
  • ,
  • K. Nagasaki
  • ,
  • S. Ohshima
  • ,
  • S. Kobayashi
  • ,
  • T. Minami
  • ,
  • X. X. Lu
  • ,
  • N. Nishino
  • ,
  • S. Kado
  • ,
  • P. Adulsiriswad
  • ,
  • H. Okada
  • ,
  • N. Kenmochi
  • ,
  • S. Inagaki
  • ,
  • J. X. Zhu
  • ,
  • G. M. Weir
  • ,
  • T. Mizuuchi
  • ,
  • S. Konoshima
  • ,
  • A. Ishizawa
  • ,
  • D. L. Yu
  • ,
  • Z. B. Shi
  • ,
  • Yi Liu
  • ,
  • L. W. Yan
  • ,
  • J. Q. Li
  • ,
  • Q. W. Yang
  • ,
  • M. Xu
  • ,
  • X. R. Duan
  • ,
  • Yong Liu

59
5
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1088/1741-4326/ab0197
出版者・発行元
IOP PUBLISHING LTD

A low-frequency electromagnetic mode (LF-mode) has been observed in a stellarator/ heliotron device, Heliotron J. The LF-mode is observed only in neutral beam heated plasmas with a co-current, which increases the rotational transform. The observed LF-mode peaks at rho = 0.86-0.91, where rho = r/a is the normalized minor radius. The LF-mode propagates in the ion diamagnetic drift direction, and the poloidal mode number is m similar to 6-8, determined with a combination of Mirnov coil arrays and 2D fast camera measurement. A high m number induces significant Doppler shift from the background ion flow. The frequency is corrected with both E x B rotation and the ion diamagnetic flow. The corrected frequency is almost consistent with the beta-induced Alfven eigenmode gap evaluated with the STELLGAP code, although very close to the accumulation point. The mode could also be a global Alfven eigenmode.

Web of Science ® 被引用回数 : 1

リンク情報
DOI
https://doi.org/10.1088/1741-4326/ab0197
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000461424900001&DestApp=WOS_CPL
ID情報
  • DOI : 10.1088/1741-4326/ab0197
  • ISSN : 0029-5515
  • eISSN : 1741-4326
  • Web of Science ID : WOS:000461424900001

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