Soft x-ray spectrum measurement of the ultralong discharge in the triam-1m tokamak

Akihiro Nagao, Eriko Jotaki, Shin Ichi Moriyama, Kazuo Nakamura, Yukio Nakamura, Naoji Hiraki, Satoshi Itoh

研究成果: ジャーナルへの寄稿記事

8 引用 (Scopus)

抄録

In order to evaluate the electron temperature and the effective charge number (Zeff) of the ultralong discharge by a lower hybrid current drive in the TRIAM-1M tokamak, the soft X-ray energy spectrum is measured by the pulse height analysis system. The accuracy of the electron temperatures determined by the soft X-ray spectrum measurements is confirmed by comparing with the temperature obtained by the Thomson scattering system for OH plasmas. We obtained a bulk electron temperature of about 1.5 keV and a Zeffvalue of about 2 during the long-term discharge. It was found that the impurities observed in the spectrum were Kα-lines of Fe, Cr and Ni originating from the stainless-steel limiter and they did not increase during the long-term discharge. Thus we obtained clean plasmas with relatively high temperature by a lower hybrid current drive.

元の言語英語
ページ(範囲)1486-1490
ページ数5
ジャーナルJapanese Journal of Applied Physics
28
発行部数8R
DOI
出版物ステータス出版済み - 8 1 1989

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Electron temperature
x ray spectra
electron energy
X rays
Plasmas
K lines
Thomson scattering
Limiters
systems analysis
pulse amplitude
stainless steels
energy spectra
x rays
Stainless steel
Scattering
Impurities
impurities
Temperature
temperature

All Science Journal Classification (ASJC) codes

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

これを引用

Nagao, A., Jotaki, E., Moriyama, S. I., Nakamura, K., Nakamura, Y., Hiraki, N., & Itoh, S. (1989). Soft x-ray spectrum measurement of the ultralong discharge in the triam-1m tokamak. Japanese Journal of Applied Physics, 28(8R), 1486-1490. https://doi.org/10.1143/JJAP.28.1486

Soft x-ray spectrum measurement of the ultralong discharge in the triam-1m tokamak. / Nagao, Akihiro; Jotaki, Eriko; Moriyama, Shin Ichi; Nakamura, Kazuo; Nakamura, Yukio; Hiraki, Naoji; Itoh, Satoshi.

:: Japanese Journal of Applied Physics, 巻 28, 番号 8R, 01.08.1989, p. 1486-1490.

研究成果: ジャーナルへの寄稿記事

Nagao, A, Jotaki, E, Moriyama, SI, Nakamura, K, Nakamura, Y, Hiraki, N & Itoh, S 1989, 'Soft x-ray spectrum measurement of the ultralong discharge in the triam-1m tokamak', Japanese Journal of Applied Physics, 巻. 28, 番号 8R, pp. 1486-1490. https://doi.org/10.1143/JJAP.28.1486
Nagao, Akihiro ; Jotaki, Eriko ; Moriyama, Shin Ichi ; Nakamura, Kazuo ; Nakamura, Yukio ; Hiraki, Naoji ; Itoh, Satoshi. / Soft x-ray spectrum measurement of the ultralong discharge in the triam-1m tokamak. :: Japanese Journal of Applied Physics. 1989 ; 巻 28, 番号 8R. pp. 1486-1490.
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AU - Hiraki, Naoji

AU - Itoh, Satoshi

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