Characteristics of transport in electron internal transport barriers and in the vicinity of rational surfaces in the Large Helical Device

K. Ida; Inagaki Shigeru; T. Shimozuma; N. Tamura; H. Funaba; K. Narihara; S. Kubo; S. Murakami; A. Wakasa; M. Yokoyama; Y. Takeiri; K. Y. Watanabe; K. Tanaka; M. Yoshinuma; Y. Liang; N. Ohyabu; T. Akiyama; N. Ashikawa; M. Emoto; T. Fujita; T. Fukuda; P. Goncharov; M. Goto; H. Idei; K. Ikeda; A. Isayama; M. Isobe; O. Kaneko; K. Kawahata; H. Kawazome; T. Kobuchi; A. Komori; R. Kumazawa; S. Masuzaki; T. Minami; J. Miyazawa; T. Morisaki; S. Morita; S. Muto; T. Mutoh; Y. Nagayama; Y. Nakamura; H. Nakanishi; Y. Narushima; K. Nishimura; N. Noda; T. Notake; H. Nozato; S. Ohdachi; Y. Oka; S. Okajima; M. Osakabe; T. Ozaki; B. J. Peterson; A. Sagara; T. Saida; K. Saito; S. Sakakibara; R. Sakamoto; Y. Sakamoto; M. Sasao; K. Sato; M. Sato; T. Seki; M. Shoji; H. Suzuki; N. Takeuchi; K. Toi; T. Tokuzawa; Y. Torii; K. Tsumori; T. Watari; H. Yamada; I. Yamada; S. Yamamoto; T. Yamamoto; Y. Yoshimura; K. Itoh; K. Matsuoka; K. Ohkubo; S. Sudo; T. Uda; K. Yamazaki; O. Motojima

doi:10.1063/1.1688787

Characteristics of transport in electron internal transport barriers and in the vicinity of rational surfaces in the Large Helical Device

K. Ida, Inagaki Shigeru, T. Shimozuma, N. Tamura, H. Funaba, K. Narihara, S. Kubo, S. Murakami, A. Wakasa, M. Yokoyama, Y. Takeiri, K. Y. Watanabe, K. Tanaka, M. Yoshinuma, Y. Liang, N. Ohyabu, T. Akiyama, N. Ashikawa, M. Emoto, T. FujitaT. Fukuda, P. Goncharov, M. Goto, H. Idei, K. Ikeda, A. Isayama, M. Isobe, O. Kaneko, K. Kawahata, H. Kawazome, T. Kobuchi, A. Komori, R. Kumazawa, S. Masuzaki, T. Minami, J. Miyazawa, T. Morisaki, S. Morita, S. Muto, T. Mutoh, Y. Nagayama, Y. Nakamura, H. Nakanishi, Y. Narushima, K. Nishimura, N. Noda, T. Notake, H. Nozato, S. Ohdachi, Y. Oka, S. Okajima, M. Osakabe, T. Ozaki, B. J. Peterson, A. Sagara, T. Saida, K. Saito, S. Sakakibara, R. Sakamoto, Y. Sakamoto, M. Sasao, K. Sato, M. Sato, T. Seki, M. Shoji, H. Suzuki, N. Takeuchi, K. Toi, T. Tokuzawa, Y. Torii, K. Tsumori, T. Watari, H. Yamada, I. Yamada, S. Yamamoto, T. Yamamoto, Y. Yoshimura, K. Itoh, K. Matsuoka, K. Ohkubo, S. Sudo, T. Uda, K. Yamazaki, O. Motojima

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Abstract

The characteristics of transport in electron internal transport barriers (ITB) and in the vicinity of a rational surface with a magnetic island were analyzed using trasient transport analysis and steady state transport analysis. An electron ITB appeared in the large helical device (LHD), when the heating power of the electron cyclotron heating exceeded a power threshold. It was shown by the transport analysis that both the standard electron thermal diffusivity and the incremental electron thermal diffusivity are reduced significantly in the ITB. The results show that the radial heat flux near the rational surface is focused at the X-point region, and that may be the mechanism to induce an ITB near a rational surface.

Original language	English
Pages (from-to)	2551-2557
Number of pages	7
Journal	Physics of Plasmas
Volume	11
Issue number	5 PART 2
DOIs	https://doi.org/10.1063/1.1688787
Publication status	Published - May 2004

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.1688787

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Ida, K., Shigeru, I., Shimozuma, T., Tamura, N., Funaba, H., Narihara, K., Kubo, S., Murakami, S., Wakasa, A., Yokoyama, M., Takeiri, Y., Watanabe, K. Y., Tanaka, K., Yoshinuma, M., Liang, Y., Ohyabu, N., Akiyama, T., Ashikawa, N., Emoto, M., ... Motojima, O. (2004). Characteristics of transport in electron internal transport barriers and in the vicinity of rational surfaces in the Large Helical Device. Physics of Plasmas, 11(5 PART 2), 2551-2557. https://doi.org/10.1063/1.1688787

Ida, K, Shigeru, I, Shimozuma, T, Tamura, N, Funaba, H, Narihara, K, Kubo, S, Murakami, S, Wakasa, A, Yokoyama, M, Takeiri, Y, Watanabe, KY, Tanaka, K, Yoshinuma, M, Liang, Y, Ohyabu, N, Akiyama, T, Ashikawa, N, Emoto, M, Fujita, T, Fukuda, T, Goncharov, P, Goto, M, Idei, H, Ikeda, K, Isayama, A, Isobe, M, Kaneko, O, Kawahata, K, Kawazome, H, Kobuchi, T, Komori, A, Kumazawa, R, Masuzaki, S, Minami, T, Miyazawa, J, Morisaki, T, Morita, S, Muto, S, Mutoh, T, Nagayama, Y, Nakamura, Y, Nakanishi, H, Narushima, Y, Nishimura, K, Noda, N, Notake, T, Nozato, H, Ohdachi, S, Oka, Y, Okajima, S, Osakabe, M, Ozaki, T, Peterson, BJ, Sagara, A, Saida, T, Saito, K, Sakakibara, S, Sakamoto, R, Sakamoto, Y, Sasao, M, Sato, K, Sato, M, Seki, T, Shoji, M, Suzuki, H, Takeuchi, N, Toi, K, Tokuzawa, T, Torii, Y, Tsumori, K, Watari, T, Yamada, H, Yamada, I, Yamamoto, S, Yamamoto, T, Yoshimura, Y, Itoh, K, Matsuoka, K, Ohkubo, K, Sudo, S, Uda, T, Yamazaki, K & Motojima, O 2004, 'Characteristics of transport in electron internal transport barriers and in the vicinity of rational surfaces in the Large Helical Device', Physics of Plasmas, vol. 11, no. 5 PART 2, pp. 2551-2557. https://doi.org/10.1063/1.1688787

@article{73920e2ac836470690ecfa4b79d50534,

title = "Characteristics of transport in electron internal transport barriers and in the vicinity of rational surfaces in the Large Helical Device",

abstract = "The characteristics of transport in electron internal transport barriers (ITB) and in the vicinity of a rational surface with a magnetic island were analyzed using trasient transport analysis and steady state transport analysis. An electron ITB appeared in the large helical device (LHD), when the heating power of the electron cyclotron heating exceeded a power threshold. It was shown by the transport analysis that both the standard electron thermal diffusivity and the incremental electron thermal diffusivity are reduced significantly in the ITB. The results show that the radial heat flux near the rational surface is focused at the X-point region, and that may be the mechanism to induce an ITB near a rational surface.",

author = "K. Ida and Inagaki Shigeru and T. Shimozuma and N. Tamura and H. Funaba and K. Narihara and S. Kubo and S. Murakami and A. Wakasa and M. Yokoyama and Y. Takeiri and Watanabe, {K. Y.} and K. Tanaka and M. Yoshinuma and Y. Liang and N. Ohyabu and T. Akiyama and N. Ashikawa and M. Emoto and T. Fujita and T. Fukuda and P. Goncharov and M. Goto and H. Idei and K. Ikeda and A. Isayama and M. Isobe and O. Kaneko and K. Kawahata and H. Kawazome and T. Kobuchi and A. Komori and R. Kumazawa and S. Masuzaki and T. Minami and J. Miyazawa and T. Morisaki and S. Morita and S. Muto and T. Mutoh and Y. Nagayama and Y. Nakamura and H. Nakanishi and Y. Narushima and K. Nishimura and N. Noda and T. Notake and H. Nozato and S. Ohdachi and Y. Oka and S. Okajima and M. Osakabe and T. Ozaki and Peterson, {B. J.} and A. Sagara and T. Saida and K. Saito and S. Sakakibara and R. Sakamoto and Y. Sakamoto and M. Sasao and K. Sato and M. Sato and T. Seki and M. Shoji and H. Suzuki and N. Takeuchi and K. Toi and T. Tokuzawa and Y. Torii and K. Tsumori and T. Watari and H. Yamada and I. Yamada and S. Yamamoto and T. Yamamoto and Y. Yoshimura and K. Itoh and K. Matsuoka and K. Ohkubo and S. Sudo and T. Uda and K. Yamazaki and O. Motojima",

year = "2004",

month = may,

doi = "10.1063/1.1688787",

language = "English",

volume = "11",

pages = "2551--2557",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics Publising LLC",

number = "5 PART 2",

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TY - JOUR

T1 - Characteristics of transport in electron internal transport barriers and in the vicinity of rational surfaces in the Large Helical Device

AU - Ida, K.

AU - Shigeru, Inagaki

AU - Shimozuma, T.

AU - Tamura, N.

AU - Funaba, H.

AU - Narihara, K.

AU - Kubo, S.

AU - Murakami, S.

AU - Wakasa, A.

AU - Yokoyama, M.

AU - Takeiri, Y.

AU - Watanabe, K. Y.

AU - Tanaka, K.

AU - Yoshinuma, M.

AU - Liang, Y.

AU - Ohyabu, N.

AU - Akiyama, T.

AU - Ashikawa, N.

AU - Emoto, M.

AU - Fujita, T.

AU - Fukuda, T.

AU - Goncharov, P.

AU - Goto, M.

AU - Idei, H.

AU - Ikeda, K.

AU - Isayama, A.

AU - Isobe, M.

AU - Kaneko, O.

AU - Kawahata, K.

AU - Kawazome, H.

AU - Kobuchi, T.

AU - Komori, A.

AU - Kumazawa, R.

AU - Masuzaki, S.

AU - Minami, T.

AU - Miyazawa, J.

AU - Morisaki, T.

AU - Morita, S.

AU - Muto, S.

AU - Mutoh, T.

AU - Nagayama, Y.

AU - Nakamura, Y.

AU - Nakanishi, H.

AU - Narushima, Y.

AU - Nishimura, K.

AU - Noda, N.

AU - Notake, T.

AU - Nozato, H.

AU - Ohdachi, S.

AU - Oka, Y.

AU - Okajima, S.

AU - Osakabe, M.

AU - Ozaki, T.

AU - Peterson, B. J.

AU - Sagara, A.

AU - Saida, T.

AU - Saito, K.

AU - Sakakibara, S.

AU - Sakamoto, R.

AU - Sakamoto, Y.

AU - Sasao, M.

AU - Sato, K.

AU - Sato, M.

AU - Seki, T.

AU - Shoji, M.

AU - Suzuki, H.

AU - Takeuchi, N.

AU - Toi, K.

AU - Tokuzawa, T.

AU - Torii, Y.

AU - Tsumori, K.

AU - Watari, T.

AU - Yamada, H.

AU - Yamada, I.

AU - Yamamoto, S.

AU - Yamamoto, T.

AU - Yoshimura, Y.

AU - Itoh, K.

AU - Matsuoka, K.

AU - Ohkubo, K.

AU - Sudo, S.

AU - Uda, T.

AU - Yamazaki, K.

AU - Motojima, O.

PY - 2004/5

Y1 - 2004/5

N2 - The characteristics of transport in electron internal transport barriers (ITB) and in the vicinity of a rational surface with a magnetic island were analyzed using trasient transport analysis and steady state transport analysis. An electron ITB appeared in the large helical device (LHD), when the heating power of the electron cyclotron heating exceeded a power threshold. It was shown by the transport analysis that both the standard electron thermal diffusivity and the incremental electron thermal diffusivity are reduced significantly in the ITB. The results show that the radial heat flux near the rational surface is focused at the X-point region, and that may be the mechanism to induce an ITB near a rational surface.

AB - The characteristics of transport in electron internal transport barriers (ITB) and in the vicinity of a rational surface with a magnetic island were analyzed using trasient transport analysis and steady state transport analysis. An electron ITB appeared in the large helical device (LHD), when the heating power of the electron cyclotron heating exceeded a power threshold. It was shown by the transport analysis that both the standard electron thermal diffusivity and the incremental electron thermal diffusivity are reduced significantly in the ITB. The results show that the radial heat flux near the rational surface is focused at the X-point region, and that may be the mechanism to induce an ITB near a rational surface.

UR - http://www.scopus.com/inward/record.url?scp=2942607656&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2942607656&partnerID=8YFLogxK

U2 - 10.1063/1.1688787

DO - 10.1063/1.1688787

M3 - Article

AN - SCOPUS:2942607656

SN - 1070-664X

VL - 11

SP - 2551

EP - 2557

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 5 PART 2

ER -

Characteristics of transport in electron internal transport barriers and in the vicinity of rational surfaces in the Large Helical Device

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