Measurements of atomic hydrogen-density profiles in the rfc-xx-m machine using laser fluorescence spectroscopy at the hαtransition

Katsunori Muraoka; Kiichiro Uchino; Yoshio Itsumi; Makoto Hamamoto; Mitsuo Maeda; Masanori Akazaki; Toshikazu Kawamoto; Ryuhei Kumazawa; Shoichi Okamura; Keizō Adati; Takashi Aoki; Hideki Fujita; Kazutoshi Hattori; Shigeru Hidekuma; Yoshimi Okubo; Teruyuki Sato; Harold R. Garner; Dan R. Baker; Harry D. Price

doi:10.1143/JJAP.24.L59

Measurements of atomic hydrogen-density profiles in the rfc-xx-m machine using laser fluorescence spectroscopy at the h_αtransition

Katsunori Muraoka, Kiichiro Uchino, Yoshio Itsumi, Makoto Hamamoto, Mitsuo Maeda, Masanori Akazaki, Toshikazu Kawamoto, Ryuhei Kumazawa, Shoichi Okamura, Keizō Adati, Takashi Aoki, Hideki Fujita, Kazutoshi Hattori, Shigeru Hidekuma, Yoshimi Okubo, Teruyuki Sato, Harold R. Garner, Dan R. Baker, Harry D. Price

Electrical Engineering Sciences

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

8 Citations (Scopus)

Abstract

To assist in the study of the power balance in a linear confinement machine, atomic hydrogen-density profiles in plasmas of the RFC-XX-M device were measured using laser fluorescence spectroscopy tuned to the Balmer alpha line. Measured profiles showed marked decreases of neutral densities in the centre of the plasma, which are explained by charge-exchange and electron ionization pumping by the plasma. It is important to note that the neutrals are well burned out in the central cell, N₁/N_e≲ 0. 01. Further, charge-exchange losses are quantitatively evaluated and discussed from the neutral-density profiles and parameters of the plasma.

Original language	English
Pages (from-to)	59-61
Number of pages	3
Journal	Japanese journal of applied physics
Volume	24
Issue number	1
DOIs	https://doi.org/10.1143/JJAP.24.L59
Publication status	Published - Jan 1985

All Science Journal Classification (ASJC) codes

General Engineering
General Physics and Astronomy

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Muraoka, K., Uchino, K., Itsumi, Y., Hamamoto, M., Maeda, M., Akazaki, M., Kawamoto, T., Kumazawa, R., Okamura, S., Adati, K., Aoki, T., Fujita, H., Hattori, K., Hidekuma, S., Okubo, Y., Sato, T., Garner, H. R., Baker, D. R., & Price, H. D. (1985). Measurements of atomic hydrogen-density profiles in the rfc-xx-m machine using laser fluorescence spectroscopy at the h_αtransition. Japanese journal of applied physics, 24(1), 59-61. https://doi.org/10.1143/JJAP.24.L59

Muraoka, K, Uchino, K, Itsumi, Y, Hamamoto, M, Maeda, M, Akazaki, M, Kawamoto, T, Kumazawa, R, Okamura, S, Adati, K, Aoki, T, Fujita, H, Hattori, K, Hidekuma, S, Okubo, Y, Sato, T, Garner, HR, Baker, DR & Price, HD 1985, 'Measurements of atomic hydrogen-density profiles in the rfc-xx-m machine using laser fluorescence spectroscopy at the h_αtransition', Japanese journal of applied physics, vol. 24, no. 1, pp. 59-61. https://doi.org/10.1143/JJAP.24.L59

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title = "Measurements of atomic hydrogen-density profiles in the rfc-xx-m machine using laser fluorescence spectroscopy at the hαtransition",

abstract = "To assist in the study of the power balance in a linear confinement machine, atomic hydrogen-density profiles in plasmas of the RFC-XX-M device were measured using laser fluorescence spectroscopy tuned to the Balmer alpha line. Measured profiles showed marked decreases of neutral densities in the centre of the plasma, which are explained by charge-exchange and electron ionization pumping by the plasma. It is important to note that the neutrals are well burned out in the central cell, N1/Ne≲ 0. 01. Further, charge-exchange losses are quantitatively evaluated and discussed from the neutral-density profiles and parameters of the plasma.",

author = "Katsunori Muraoka and Kiichiro Uchino and Yoshio Itsumi and Makoto Hamamoto and Mitsuo Maeda and Masanori Akazaki and Toshikazu Kawamoto and Ryuhei Kumazawa and Shoichi Okamura and Keizō Adati and Takashi Aoki and Hideki Fujita and Kazutoshi Hattori and Shigeru Hidekuma and Yoshimi Okubo and Teruyuki Sato and Garner, {Harold R.} and Baker, {Dan R.} and Price, {Harry D.}",

year = "1985",

month = jan,

doi = "10.1143/JJAP.24.L59",

language = "English",

volume = "24",

pages = "59--61",

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T1 - Measurements of atomic hydrogen-density profiles in the rfc-xx-m machine using laser fluorescence spectroscopy at the hαtransition

AU - Muraoka, Katsunori

AU - Uchino, Kiichiro

AU - Itsumi, Yoshio

AU - Hamamoto, Makoto

AU - Maeda, Mitsuo

AU - Akazaki, Masanori

AU - Kawamoto, Toshikazu

AU - Kumazawa, Ryuhei

AU - Okamura, Shoichi

AU - Adati, Keizō

AU - Aoki, Takashi

AU - Fujita, Hideki

AU - Hattori, Kazutoshi

AU - Hidekuma, Shigeru

AU - Okubo, Yoshimi

AU - Sato, Teruyuki

AU - Garner, Harold R.

AU - Baker, Dan R.

AU - Price, Harry D.

PY - 1985/1

Y1 - 1985/1

N2 - To assist in the study of the power balance in a linear confinement machine, atomic hydrogen-density profiles in plasmas of the RFC-XX-M device were measured using laser fluorescence spectroscopy tuned to the Balmer alpha line. Measured profiles showed marked decreases of neutral densities in the centre of the plasma, which are explained by charge-exchange and electron ionization pumping by the plasma. It is important to note that the neutrals are well burned out in the central cell, N1/Ne≲ 0. 01. Further, charge-exchange losses are quantitatively evaluated and discussed from the neutral-density profiles and parameters of the plasma.

AB - To assist in the study of the power balance in a linear confinement machine, atomic hydrogen-density profiles in plasmas of the RFC-XX-M device were measured using laser fluorescence spectroscopy tuned to the Balmer alpha line. Measured profiles showed marked decreases of neutral densities in the centre of the plasma, which are explained by charge-exchange and electron ionization pumping by the plasma. It is important to note that the neutrals are well burned out in the central cell, N1/Ne≲ 0. 01. Further, charge-exchange losses are quantitatively evaluated and discussed from the neutral-density profiles and parameters of the plasma.

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JO - Japanese journal of applied physics

JF - Japanese journal of applied physics

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Measurements of atomic hydrogen-density profiles in the rfc-xx-m machine using laser fluorescence spectroscopy at the h_αtransition

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