Atomic hydrogen behaviour in Heliotron E

K. Muraoka, Kiichiro Uchino, M. Maeda, T. Kajiwara, K. Matsuo, T. Okada, C. Honda, Y. Suehiro, N. Yano, K. Takeda, H. Hagiwara, M. Akazaki, S. Sudo, K. Kondo, H. Matsuura, T. Mizuuchi, F. Sano, M. Sato, H. Zushi, T. Obiki

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Abstract

In order to understand atomic hydrogen behaviour and particle confinement properties in Heliotron E plasmas, techniques of laser induced fluorescence (LIF) have been extensively used, combined with measurements of absolute Balmer alpha emissions and density fluctuations. The results revealed that for an average electron density n ̄ e > 1.5 × 10 19 m -3 , Hα fluorescence allowed the measurements of atomic hydrogen densities and yielded the recycled Franck-Condon neutrals (~ 3 eV) to penetrate into core plasmas, whereas for n ̄ e < 1.0 × 10 19 m -3 , such measurements were perturbed by dissociative-excitation of H 2 molecules into the n = 2 state. Also, the global confinement times showed a clear correlation with electron density fluctuations.

Original languageEnglish
Pages (from-to)231-235
Number of pages5
JournalJournal of Nuclear Materials
Volume176-177
Issue numberC
DOIs
Publication statusPublished - Dec 3 1990

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Hydrogen
Carrier concentration
hydrogen
Fluorescence
Plasmas
Plasma confinement
laser induced fluorescence
fluorescence
Molecules
Lasers
excitation
molecules

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Materials Science(all)

Cite this

Muraoka, K., Uchino, K., Maeda, M., Kajiwara, T., Matsuo, K., Okada, T., ... Obiki, T. (1990). Atomic hydrogen behaviour in Heliotron E. Journal of Nuclear Materials, 176-177(C), 231-235. https://doi.org/10.1016/0022-3115(90)90051-N

Atomic hydrogen behaviour in Heliotron E. / Muraoka, K.; Uchino, Kiichiro; Maeda, M.; Kajiwara, T.; Matsuo, K.; Okada, T.; Honda, C.; Suehiro, Y.; Yano, N.; Takeda, K.; Hagiwara, H.; Akazaki, M.; Sudo, S.; Kondo, K.; Matsuura, H.; Mizuuchi, T.; Sano, F.; Sato, M.; Zushi, H.; Obiki, T.

In: Journal of Nuclear Materials, Vol. 176-177, No. C, 03.12.1990, p. 231-235.

Research output: Contribution to journalArticle

Muraoka, K, Uchino, K, Maeda, M, Kajiwara, T, Matsuo, K, Okada, T, Honda, C, Suehiro, Y, Yano, N, Takeda, K, Hagiwara, H, Akazaki, M, Sudo, S, Kondo, K, Matsuura, H, Mizuuchi, T, Sano, F, Sato, M, Zushi, H & Obiki, T 1990, 'Atomic hydrogen behaviour in Heliotron E', Journal of Nuclear Materials, vol. 176-177, no. C, pp. 231-235. https://doi.org/10.1016/0022-3115(90)90051-N
Muraoka K, Uchino K, Maeda M, Kajiwara T, Matsuo K, Okada T et al. Atomic hydrogen behaviour in Heliotron E. Journal of Nuclear Materials. 1990 Dec 3;176-177(C):231-235. https://doi.org/10.1016/0022-3115(90)90051-N
Muraoka, K. ; Uchino, Kiichiro ; Maeda, M. ; Kajiwara, T. ; Matsuo, K. ; Okada, T. ; Honda, C. ; Suehiro, Y. ; Yano, N. ; Takeda, K. ; Hagiwara, H. ; Akazaki, M. ; Sudo, S. ; Kondo, K. ; Matsuura, H. ; Mizuuchi, T. ; Sano, F. ; Sato, M. ; Zushi, H. ; Obiki, T. / Atomic hydrogen behaviour in Heliotron E. In: Journal of Nuclear Materials. 1990 ; Vol. 176-177, No. C. pp. 231-235.
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AU - Honda, C.

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