Feasibility of Electron Density Measurement Using Relativistic Downshift Frequency Effect of Electron Cyclotron Emission in Tokamak Plasmas

• Sato Masayasu

  Japan Atomic Energy Research Institute

• Isayama Akihiko

  Japan Atomic Energy Research Institute

• Iwama Naofumi

  Daido Institute of Technology

• Kawahata Kazuo

  National Institute for Fusion Science

Abstract

The feasibility of electron density measurement using the relativistic downshift frequency effect of electron cyclotron emission in tokamak plasmas has been studied by numerical calculation. It is found that electron density measurement can be performed by observing the frequency shift from the nonrelativistic electron cyclotron frequency. The frequency shift is large when the observation is carried out from the high-field-side of torus. As this large frequency shift depends mainly on electron temperature and density, electron density can be determined while electron temperature is obtained from the observation of the low-field-side.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 44 (20-23), L672-L675, 2005

  The Japan Society of Applied Physics

Keywords

• electron density measurement
• electron cyclotron emission
• relativistic downshift frequency effect
• diagnostics
• tokamak plasma

Details

• CRID: 1390001206264071296
• NII Article ID: 10016150793
• NII Article ID: 130004533362
• NII Article ID: 210000059620
• NII Book ID: AA11906093
• DOI: 10.1143/jjap.44.l672
• ISSN: 13474065
• ISSN: 00214922
• NDL BIB ID: 7339252
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7339252
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.L672
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.L672/pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed