ECE diagnostics in the high density plasma in LHD

H. Sasao, Inagaki Shigeru, Y. Nagayama, P. C. De Vries, K. Kawahata, K. Y. Watanabe, T. Tokuzawa, K. Tanaka, S. Kubo, K. Narihara, A. Komori, H. Yamada, O. Kaneko, O. Motojima

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The second harmonic X-mode electron cyclotron emission (ECE) from high-density plasma (the electron density is more than 50% of the cut-off density) is analyzed taking into account the refractive index and the influence of polarization in low field operated large helical device (LHD) (the magnetic field B0 = 1.5 T). The density dependence of ECE is obtained and compared with the predictions of a theoretical model. It is concluded that the density dependence significantly influences the measurement of Te by ECE in LHD.

Original languageEnglish
Pages (from-to)153-160
Number of pages8
JournalFusion Engineering and Design
Issue number1-4
Publication statusPublished - Jan 1 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering


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