Observation of dust particles by a laser scattering method in the JIPPT-IIU tokamak

K. Narihara; K. Toi; Y. Hamada; K. Yamauchi; K. Adachi; I. Yamada; K. N. Sato; K. Kawahata; A. Nishizawa; S. Ohdachi; K. Sato; T. Seki; T. Watari; J. Xu; A. Ejiri; S. Hirokura; K. Ida; Y. Kawasumi; M. Kojima; H. Sakakita; T. Ido; K. Kitachi; J. Koog; H. Kuramoto

doi:10.1088/0029-5515/37/8/I12

Observation of dust particles by a laser scattering method in the JIPPT-IIU tokamak

K. Narihara, K. Toi, Y. Hamada, K. Yamauchi, K. Adachi, I. Yamada, K. N. Sato, K. Kawahata, A. Nishizawa, S. Ohdachi, K. Sato, T. Seki, T. Watari, J. Xu, A. Ejiri, S. Hirokura, K. Ida, Y. Kawasumi, M. Kojima, H. SakakitaT. Ido, K. Kitachi, J. Koog, H. Kuramoto

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

19 Citations (Scopus)

Abstract

Laser scattering signals that indicate the presence of small dust particles (diameter ≤ 2 μm) have been occasionally observed in the JIPPT-IIU tokamak chamber. This phenomenon was reproduced deliberately by spreading carbon dust from the top of the vacuum chamber. No noticeable effect on the plasma was observed for dust falls of up to at least 10₆ particles (10 μg) in 20 ms during discharges. Dust falling just before plasma startup seemed to be confined but it was soon ejected (in less than 30 ms).

Original language	English
Pages (from-to)	1177-1182
Number of pages	6
Journal	Nuclear Fusion
Volume	37
Issue number	8
DOIs	https://doi.org/10.1088/0029-5515/37/8/I12
Publication status	Published - Aug 1 1997
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

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Narihara, K., Toi, K., Hamada, Y., Yamauchi, K., Adachi, K., Yamada, I., Sato, K. N., Kawahata, K., Nishizawa, A., Ohdachi, S., Sato, K., Seki, T., Watari, T., Xu, J., Ejiri, A., Hirokura, S., Ida, K., Kawasumi, Y., Kojima, M., ... Kuramoto, H. (1997). Observation of dust particles by a laser scattering method in the JIPPT-IIU tokamak. Nuclear Fusion, 37(8), 1177-1182. https://doi.org/10.1088/0029-5515/37/8/I12

Narihara, K, Toi, K, Hamada, Y, Yamauchi, K, Adachi, K, Yamada, I, Sato, KN, Kawahata, K, Nishizawa, A, Ohdachi, S, Sato, K, Seki, T, Watari, T, Xu, J, Ejiri, A, Hirokura, S, Ida, K, Kawasumi, Y, Kojima, M, Sakakita, H, Ido, T, Kitachi, K, Koog, J & Kuramoto, H 1997, 'Observation of dust particles by a laser scattering method in the JIPPT-IIU tokamak', Nuclear Fusion, vol. 37, no. 8, pp. 1177-1182. https://doi.org/10.1088/0029-5515/37/8/I12

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title = "Observation of dust particles by a laser scattering method in the JIPPT-IIU tokamak",

abstract = "Laser scattering signals that indicate the presence of small dust particles (diameter ≤ 2 μm) have been occasionally observed in the JIPPT-IIU tokamak chamber. This phenomenon was reproduced deliberately by spreading carbon dust from the top of the vacuum chamber. No noticeable effect on the plasma was observed for dust falls of up to at least 106 particles (10 μg) in 20 ms during discharges. Dust falling just before plasma startup seemed to be confined but it was soon ejected (in less than 30 ms).",

author = "K. Narihara and K. Toi and Y. Hamada and K. Yamauchi and K. Adachi and I. Yamada and Sato, {K. N.} and K. Kawahata and A. Nishizawa and S. Ohdachi and K. Sato and T. Seki and T. Watari and J. Xu and A. Ejiri and S. Hirokura and K. Ida and Y. Kawasumi and M. Kojima and H. Sakakita and T. Ido and K. Kitachi and J. Koog and H. Kuramoto",

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doi = "10.1088/0029-5515/37/8/I12",

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TY - JOUR

T1 - Observation of dust particles by a laser scattering method in the JIPPT-IIU tokamak

AU - Narihara, K.

AU - Toi, K.

AU - Hamada, Y.

AU - Yamauchi, K.

AU - Adachi, K.

AU - Yamada, I.

AU - Sato, K. N.

AU - Kawahata, K.

AU - Nishizawa, A.

AU - Ohdachi, S.

AU - Sato, K.

AU - Seki, T.

AU - Watari, T.

AU - Xu, J.

AU - Ejiri, A.

AU - Hirokura, S.

AU - Ida, K.

AU - Kawasumi, Y.

AU - Kojima, M.

AU - Sakakita, H.

AU - Ido, T.

AU - Kitachi, K.

AU - Koog, J.

AU - Kuramoto, H.

PY - 1997/8/1

Y1 - 1997/8/1

N2 - Laser scattering signals that indicate the presence of small dust particles (diameter ≤ 2 μm) have been occasionally observed in the JIPPT-IIU tokamak chamber. This phenomenon was reproduced deliberately by spreading carbon dust from the top of the vacuum chamber. No noticeable effect on the plasma was observed for dust falls of up to at least 106 particles (10 μg) in 20 ms during discharges. Dust falling just before plasma startup seemed to be confined but it was soon ejected (in less than 30 ms).

AB - Laser scattering signals that indicate the presence of small dust particles (diameter ≤ 2 μm) have been occasionally observed in the JIPPT-IIU tokamak chamber. This phenomenon was reproduced deliberately by spreading carbon dust from the top of the vacuum chamber. No noticeable effect on the plasma was observed for dust falls of up to at least 106 particles (10 μg) in 20 ms during discharges. Dust falling just before plasma startup seemed to be confined but it was soon ejected (in less than 30 ms).

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SN - 0029-5515

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SP - 1177

EP - 1182

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 8

ER -

Observation of dust particles by a laser scattering method in the JIPPT-IIU tokamak

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