Properties of the LHD plasmas with a large island-super dense core plasma and island healing

N. Ohyabu; T. Morisaki; S. Masuzaki; R. Sakamoto; M. Kobayashi; J. Miyazawa; M. Shoji; H. Funaba; J. H. Harris; Y. Hirooka; S. Inagaki; K. Itoh; K. Narihara; N. Nakajima; Y. Narushima; S. Ohdachi; B. Peterson; S. Sakakibara; R. Sanchez; K. Tanaka; K. Watanabe; M. Yokoyama; K. Ida; T. Shimozuma; H. Yamada; Y. Nagayama; O. Kaneko; T. Mutoh; K. Kawahata; A. Komori; S. Sudo; O. Motojima

doi:10.1088/0741-3335/48/12B/S35

Properties of the LHD plasmas with a large island-super dense core plasma and island healing

N. Ohyabu, T. Morisaki, S. Masuzaki, R. Sakamoto, M. Kobayashi, J. Miyazawa, M. Shoji, H. Funaba, J. H. Harris, Y. Hirooka, S. Inagaki, K. Itoh, K. Narihara, N. Nakajima, Y. Narushima, S. Ohdachi, B. Peterson, S. Sakakibara, R. Sanchez, K. TanakaK. Watanabe, M. Yokoyama, K. Ida, T. Shimozuma, H. Yamada, Y. Nagayama, O. Kaneko, T. Mutoh, K. Kawahata, A. Komori, S. Sudo, O. Motojima

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

8 Citations (Scopus)

Abstract

In local island (m/n = 1/1) divertor discharges in the large helical device a stable super dense core plasma develops when a series of pellets are injected. A core region with a density as high as 4.6 × 10²⁰ m^-3 and a temperature of 0.85 keV is maintained by an internal diffusion barrier with a very high density gradient. In a study of island dynamics, we find that an externally imposed large island (m/n = 1/1) as large as 15% of the minor radius is healed when beta at the island exceeds a critical value.

Original language	English
Pages (from-to)	B383-B390
Journal	Plasma Physics and Controlled Fusion
Volume	48
Issue number	12 B
DOIs	https://doi.org/10.1088/0741-3335/48/12B/S35
Publication status	Published - Dec 1 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

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10.1088/0741-3335/48/12B/S35

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Ohyabu, N., Morisaki, T., Masuzaki, S., Sakamoto, R., Kobayashi, M., Miyazawa, J., Shoji, M., Funaba, H., Harris, J. H., Hirooka, Y., Inagaki, S., Itoh, K., Narihara, K., Nakajima, N., Narushima, Y., Ohdachi, S., Peterson, B., Sakakibara, S., Sanchez, R., ... Motojima, O. (2006). Properties of the LHD plasmas with a large island-super dense core plasma and island healing. Plasma Physics and Controlled Fusion, 48(12 B), B383-B390. https://doi.org/10.1088/0741-3335/48/12B/S35

Ohyabu, N, Morisaki, T, Masuzaki, S, Sakamoto, R, Kobayashi, M, Miyazawa, J, Shoji, M, Funaba, H, Harris, JH, Hirooka, Y, Inagaki, S, Itoh, K, Narihara, K, Nakajima, N, Narushima, Y, Ohdachi, S, Peterson, B, Sakakibara, S, Sanchez, R, Tanaka, K, Watanabe, K, Yokoyama, M, Ida, K, Shimozuma, T, Yamada, H, Nagayama, Y, Kaneko, O, Mutoh, T, Kawahata, K, Komori, A, Sudo, S & Motojima, O 2006, 'Properties of the LHD plasmas with a large island-super dense core plasma and island healing', Plasma Physics and Controlled Fusion, vol. 48, no. 12 B, pp. B383-B390. https://doi.org/10.1088/0741-3335/48/12B/S35

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abstract = "In local island (m/n = 1/1) divertor discharges in the large helical device a stable super dense core plasma develops when a series of pellets are injected. A core region with a density as high as 4.6 × 1020 m-3 and a temperature of 0.85 keV is maintained by an internal diffusion barrier with a very high density gradient. In a study of island dynamics, we find that an externally imposed large island (m/n = 1/1) as large as 15% of the minor radius is healed when beta at the island exceeds a critical value.",

author = "N. Ohyabu and T. Morisaki and S. Masuzaki and R. Sakamoto and M. Kobayashi and J. Miyazawa and M. Shoji and H. Funaba and Harris, {J. H.} and Y. Hirooka and S. Inagaki and K. Itoh and K. Narihara and N. Nakajima and Y. Narushima and S. Ohdachi and B. Peterson and S. Sakakibara and R. Sanchez and K. Tanaka and K. Watanabe and M. Yokoyama and K. Ida and T. Shimozuma and H. Yamada and Y. Nagayama and O. Kaneko and T. Mutoh and K. Kawahata and A. Komori and S. Sudo and O. Motojima",

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doi = "10.1088/0741-3335/48/12B/S35",

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T1 - Properties of the LHD plasmas with a large island-super dense core plasma and island healing

AU - Ohyabu, N.

AU - Morisaki, T.

AU - Masuzaki, S.

AU - Sakamoto, R.

AU - Kobayashi, M.

AU - Miyazawa, J.

AU - Shoji, M.

AU - Funaba, H.

AU - Harris, J. H.

AU - Hirooka, Y.

AU - Inagaki, S.

AU - Itoh, K.

AU - Narihara, K.

AU - Nakajima, N.

AU - Narushima, Y.

AU - Ohdachi, S.

AU - Peterson, B.

AU - Sakakibara, S.

AU - Sanchez, R.

AU - Tanaka, K.

AU - Watanabe, K.

AU - Yokoyama, M.

AU - Ida, K.

AU - Shimozuma, T.

AU - Yamada, H.

AU - Nagayama, Y.

AU - Kaneko, O.

AU - Mutoh, T.

AU - Kawahata, K.

AU - Komori, A.

AU - Sudo, S.

AU - Motojima, O.

PY - 2006/12/1

Y1 - 2006/12/1

N2 - In local island (m/n = 1/1) divertor discharges in the large helical device a stable super dense core plasma develops when a series of pellets are injected. A core region with a density as high as 4.6 × 1020 m-3 and a temperature of 0.85 keV is maintained by an internal diffusion barrier with a very high density gradient. In a study of island dynamics, we find that an externally imposed large island (m/n = 1/1) as large as 15% of the minor radius is healed when beta at the island exceeds a critical value.

AB - In local island (m/n = 1/1) divertor discharges in the large helical device a stable super dense core plasma develops when a series of pellets are injected. A core region with a density as high as 4.6 × 1020 m-3 and a temperature of 0.85 keV is maintained by an internal diffusion barrier with a very high density gradient. In a study of island dynamics, we find that an externally imposed large island (m/n = 1/1) as large as 15% of the minor radius is healed when beta at the island exceeds a critical value.

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M3 - Article

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JO - Plasma Physics and Controlled Fusion

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IS - 12 B

ER -

Properties of the LHD plasmas with a large island-super dense core plasma and island healing

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