Radiation profile measurements for edge transport barrier discharges in the compact helical system

C. Suzuki; S. Okamura; T. Minami; T. Akiyama; A. Fujisawa; K. Ida; M. Isobe; K. Matsuoka; K. Nagaoka; S. Nishimura; B. J. Peterson; A. Shimizu; C. Takahashi; K. Toi; Y. Yoshimura

Radiation profile measurements for edge transport barrier discharges in the compact helical system

C. Suzuki, S. Okamura, T. Minami, T. Akiyama, A. Fujisawa, K. Ida, M. Isobe, K. Matsuoka, K. Nagaoka, S. Nishimura, B. J. Peterson, A. Shimizu, C. Takahashi, K. Toi, Y. Yoshimura

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We have measured the spatial distributions of the radiation emissivity in the ETB discharges in CHS by using an AXUV photodiode array. The radiation profile rapidly changes into more hollow one immediately after the spontaneous transition to the ETB phase, which implies the impurity transport is reduced near the plasma boundary due to the ETB formation. This implication is supported by the observations of the time evolutions of the metallic impurity line intensities from the plasma core. Quantitative analyses of impurity transport based on numerical codes is required in the future work.

Original language	English
Title of host publication	33rd EPS Conference on Plasma Physics 2006, EPS 2006 - Europhysics Conference Abstracts
Pages	1588-1591
Number of pages	4
Publication status	Published - Dec 1 2006
Externally published	Yes
Event	33rd European Physical Society Conference on Plasma Physics 2006, EPS 2006 - Rome, Italy Duration: Jun 19 2006 → Jun 23 2006

Publication series

Name	33rd EPS Conference on Plasma Physics 2006, EPS 2006
Volume	2

Other

Other	33rd European Physical Society Conference on Plasma Physics 2006, EPS 2006
Country/Territory	Italy
City	Rome
Period	6/19/06 → 6/23/06

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

Cite this

Suzuki, C., Okamura, S., Minami, T., Akiyama, T., Fujisawa, A., Ida, K., Isobe, M., Matsuoka, K., Nagaoka, K., Nishimura, S., Peterson, B. J., Shimizu, A., Takahashi, C., Toi, K., & Yoshimura, Y. (2006). Radiation profile measurements for edge transport barrier discharges in the compact helical system. In 33rd EPS Conference on Plasma Physics 2006, EPS 2006 - Europhysics Conference Abstracts (pp. 1588-1591). (33rd EPS Conference on Plasma Physics 2006, EPS 2006; Vol. 2).

Radiation profile measurements for edge transport barrier discharges in the compact helical system. / Suzuki, C.; Okamura, S.; Minami, T. et al.
33rd EPS Conference on Plasma Physics 2006, EPS 2006 - Europhysics Conference Abstracts. 2006. p. 1588-1591 (33rd EPS Conference on Plasma Physics 2006, EPS 2006; Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Suzuki, C, Okamura, S, Minami, T, Akiyama, T, Fujisawa, A, Ida, K, Isobe, M, Matsuoka, K, Nagaoka, K, Nishimura, S, Peterson, BJ, Shimizu, A, Takahashi, C, Toi, K & Yoshimura, Y 2006, Radiation profile measurements for edge transport barrier discharges in the compact helical system. in 33rd EPS Conference on Plasma Physics 2006, EPS 2006 - Europhysics Conference Abstracts. 33rd EPS Conference on Plasma Physics 2006, EPS 2006, vol. 2, pp. 1588-1591, 33rd European Physical Society Conference on Plasma Physics 2006, EPS 2006, Rome, Italy, 6/19/06.

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abstract = "We have measured the spatial distributions of the radiation emissivity in the ETB discharges in CHS by using an AXUV photodiode array. The radiation profile rapidly changes into more hollow one immediately after the spontaneous transition to the ETB phase, which implies the impurity transport is reduced near the plasma boundary due to the ETB formation. This implication is supported by the observations of the time evolutions of the metallic impurity line intensities from the plasma core. Quantitative analyses of impurity transport based on numerical codes is required in the future work.",

author = "C. Suzuki and S. Okamura and T. Minami and T. Akiyama and A. Fujisawa and K. Ida and M. Isobe and K. Matsuoka and K. Nagaoka and S. Nishimura and Peterson, {B. J.} and A. Shimizu and C. Takahashi and K. Toi and Y. Yoshimura",

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language = "English",

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AU - Suzuki, C.

AU - Okamura, S.

AU - Minami, T.

AU - Akiyama, T.

AU - Fujisawa, A.

AU - Ida, K.

AU - Isobe, M.

AU - Matsuoka, K.

AU - Nagaoka, K.

AU - Nishimura, S.

AU - Peterson, B. J.

AU - Shimizu, A.

AU - Takahashi, C.

AU - Toi, K.

AU - Yoshimura, Y.

PY - 2006/12/1

Y1 - 2006/12/1

N2 - We have measured the spatial distributions of the radiation emissivity in the ETB discharges in CHS by using an AXUV photodiode array. The radiation profile rapidly changes into more hollow one immediately after the spontaneous transition to the ETB phase, which implies the impurity transport is reduced near the plasma boundary due to the ETB formation. This implication is supported by the observations of the time evolutions of the metallic impurity line intensities from the plasma core. Quantitative analyses of impurity transport based on numerical codes is required in the future work.

AB - We have measured the spatial distributions of the radiation emissivity in the ETB discharges in CHS by using an AXUV photodiode array. The radiation profile rapidly changes into more hollow one immediately after the spontaneous transition to the ETB phase, which implies the impurity transport is reduced near the plasma boundary due to the ETB formation. This implication is supported by the observations of the time evolutions of the metallic impurity line intensities from the plasma core. Quantitative analyses of impurity transport based on numerical codes is required in the future work.

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BT - 33rd EPS Conference on Plasma Physics 2006, EPS 2006 - Europhysics Conference Abstracts

T2 - 33rd European Physical Society Conference on Plasma Physics 2006, EPS 2006

Y2 - 19 June 2006 through 23 June 2006

ER -

Radiation profile measurements for edge transport barrier discharges in the compact helical system

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