Atomic hydrogen behaviour in Heliotron E

K. Muraoka; K. 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

doi:10.1016/0022-3115(90)90051-N

Atomic hydrogen behaviour in Heliotron E

K. Muraoka
, K. 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

Electrical Engineering Sciences

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

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 × 10¹⁹ 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 × 10¹⁹ m^-3, such measurements were perturbed by dissociative-excitation of H₂ molecules into the n = 2 state. Also, the global confinement times showed a clear correlation with electron density fluctuations.

Original language	English
Pages (from-to)	231-235
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	176-177
Issue number	C
DOIs	https://doi.org/10.1016/0022-3115(90)90051-N
Publication status	Published - Dec 3 1990

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

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10.1016/0022-3115(90)90051-N

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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, 176-177(C), 231-235. https://doi.org/10.1016/0022-3115(90)90051-N

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

@article{5bb3a52ba9d646248d170a259fdaee86,

title = "Atomic hydrogen behaviour in Heliotron E",

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 {\texttimes} 1019 m-3, Hα fluorescence allowed the measurements of atomic hydrogen densities and yielded the recycled Franck-Condon neutrals (\textasciitilde{} 3 eV) to penetrate into core plasmas, whereas for n{\= }e < 1.0 {\texttimes} 1019 m-3, such measurements were perturbed by dissociative-excitation of H2 molecules into the n = 2 state. Also, the global confinement times showed a clear correlation with electron density fluctuations.",

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

year = "1990",

month = dec,

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doi = "10.1016/0022-3115(90)90051-N",

language = "English",

volume = "176-177",

pages = "231--235",

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TY - JOUR

T1 - Atomic hydrogen behaviour in Heliotron E

AU - Muraoka, K.

AU - Uchino, K.

AU - Maeda, M.

AU - Kajiwara, T.

AU - Matsuo, K.

AU - Okada, T.

AU - Honda, C.

AU - Suehiro, Y.

AU - Yano, N.

AU - Takeda, K.

AU - Hagiwara, H.

AU - Akazaki, M.

AU - Sudo, S.

AU - Kondo, K.

AU - Matsuura, H.

AU - Mizuuchi, T.

AU - Sano, F.

AU - Sato, M.

AU - Zushi, H.

AU - Obiki, T.

PY - 1990/12/3

Y1 - 1990/12/3

N2 - 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 × 1019 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 × 1019 m-3, such measurements were perturbed by dissociative-excitation of H2 molecules into the n = 2 state. Also, the global confinement times showed a clear correlation with electron density fluctuations.

AB - 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 × 1019 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 × 1019 m-3, such measurements were perturbed by dissociative-excitation of H2 molecules into the n = 2 state. Also, the global confinement times showed a clear correlation with electron density fluctuations.

UR - https://www.scopus.com/pages/publications/0025557079

UR - https://www.scopus.com/pages/publications/0025557079#tab=citedBy

U2 - 10.1016/0022-3115(90)90051-N

DO - 10.1016/0022-3115(90)90051-N

M3 - Article

AN - SCOPUS:0025557079

SN - 0022-3115

VL - 176-177

SP - 231

EP - 235

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - C

ER -

Atomic hydrogen behaviour in Heliotron E

Abstract

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