Bifurcation-Like Behavior of Electrostatic Potential in LHD

• SHIMIZU Akihiro

  National Institute for Fusion Science

• IDO Takeshi

  National Institute for Fusion Science

• NISHIURA Masaki

  National Institute for Fusion Science

• MAKINO Ryohei

  Graduated School of Engineering, Nagoya University

• YOKOYAMA Masayuki

  National Institute for Fusion Science

• TAKAHASHI Hiromi

  National Institute for Fusion Science

• IGAMI Hiroe

  National Institute for Fusion Science

• YOSHIMURA Yasuo

  National Institute for Fusion Science

• KUBO Shin

  National Institute for Fusion Science

• SHIMOZUMA Takashi

  National Institute for Fusion Science

• TAMURA Naoki

  National Institute for Fusion Science

• LHD Experiment Group

Abstract

The temporal evolution of the potential is measured with the heavy ion beam probe (HIBP) in the Large Helical Device (LHD). A rapid change in the potential is observed early in the tangential neutral beam injection (NBI) phase, just after the switch from tangential to perpendicular NBI, and in a low-power electron cyclotron heated (ECH) discharge in the LHD. The radial profile of the potential is measured before and after the potential change. This rapid potential change is considered to indicate the bifurcation of the radial electric field in the edge region of the LHD plasma.

Journal

• Plasma and Fusion Research

  Plasma and Fusion Research 8 (0), 2402122-2402122, 2013

  The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

• radial electric field
• bifurcation
• Heavy Ion Beam Probe
• helical device

Details

• CRID: 1390282680229569152
• NII Article ID: 130004687673
• DOI: 10.1585/pfr.8.2402122
• ISSN: 18806821
• HANDLE: 10655/10176
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/124
• Web Site: https://www.jstage.jst.go.jp/article/pfr/8/0/8_2402122/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed