Formation of electron internal transport barrier and achievement of high ion temperature in Large Helical Device | Zendy

Y. Takeiri | Zendy; Τ. Shimozuma | Zendy; S. Kubo | Zendy; S. Morita | Zendy; M. Osakabe | Zendy; O. Kaneko | Zendy; K. Tsumori | Zendy; Y. Oka | Zendy; K. Ikeda | Zendy; K. Nagaoka | Zendy; N. Ohyabu | Zendy; K. Ida | Zendy; M. Yokoyama | Zendy; J. Miyazawa | Zendy; M. Goto | Zendy; K. Narihara | Zendy; I. Yamada | Zendy; H. Idei | Zendy; Y. Yoshimura | Zendy; N. Ashikawa | Zendy; M. Emoto | Zendy; H. Funaba | Zendy; S. Inagaki | Zendy; M. Isobe | Zendy; K. Kawahata | Zendy; Konstantin Khlopenkov | Zendy; T. Kobuchi | Zendy; A. Komori | Zendy; A Kostrioukov | Zendy; R. Kumazawa | Zendy; Y. Liang | Zendy; S. Masuzaki | Zendy; T. Minami | Zendy; T. Morisaki | Zendy; S. Murakami | Zendy; S. Muto | Zendy; T. Mutoh | Zendy; Y. Nagayama | Zendy; Y. Nakamura | Zendy; H. Nakanishi | Zendy; Y. Narushima | Zendy; K. Nishimura | Zendy; N. Noda | Zendy; S. Ohdachi | Zendy; T. Ozaki | Zendy; B. J. Peterson | Zendy; A. Sagara | Zendy; Kenji Saito | Zendy; S. Sakakibara | Zendy; R. Sakamoto | Zendy; M. Sasao | Zendy; K. Sato | Zendy; Masahiko Sato | Zendy; T. Seki | Zendy; M. Shoji | Zendy; H. Suzuki | Zendy; N. Tamura | Zendy; K. Tanaka | Zendy; K. Toi | Zendy; T. Tokuzawa | Zendy; K. Y. Watanabe | Zendy; T. Watari | Zendy; Yuhong Xu | Zendy; H. Yamada | Zendy; M. Yoshinuma | Zendy; K. Itoh | Zendy; Κ. Ohkubo | Zendy; T. Satow | Zendy; S. Sudo | Zendy; Taizo Uda | Zendy; K. Yamazaki | Zendy; Yoshinori Hamada | Zendy; K. Matsuoka | Zendy; O. Motojima | Zendy; Masami Fujiwara | Zendy; T. Notake | Zendy; N. Takeuchi | Zendy; Y. Torii | Zendy; S. Yamamoto | Zendy; Takashi Yamamoto | Zendy; T. Akiyama | Zendy; P. R. Goncharov | Zendy; T. Saida | Zendy; H. Kawazome | Zendy; Hideaki Nozato | Zendy

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Formation of electron internal transport barrier and achievement of high ion temperature in Large Helical Device

Author(s) -

Y. Takeiri,

Τ. Shimozuma,

S. Kubo,

S. Morita,

M. Osakabe,

O. Kaneko,

K. Tsumori,

Y. Oka,

K. Ikeda,

K. Nagaoka,

N. Ohyabu,

K. Ida,

M. Yokoyama,

J. Miyazawa,

M. Goto,

K. Narihara,

I. Yamada,

H. Idei,

Y. Yoshimura,

N. Ashikawa,

M. Emoto,

H. Funaba,

S. Inagaki,

M. Isobe,

K. Kawahata,

Konstantin Khlopenkov,

T. Kobuchi,

A. Komori,

A Kostrioukov,

R. Kumazawa,

Y. Liang,

S. Masuzaki,

T. Minami,

T. Morisaki,

S. Murakami,

S. Muto,

T. Mutoh,

Y. Nagayama,

Y. Nakamura,

H. Nakanishi,

Y. Narushima,

K. Nishimura,

N. Noda,

S. Ohdachi,

T. Ozaki,

B. J. Peterson,

A. Sagara,

Kenji Saito,

S. Sakakibara,

R. Sakamoto,

M. Sasao,

K. Sato,

Masahiko Sato,

T. Seki,

M. Shoji,

H. Suzuki,

N. Tamura,

K. Tanaka,

K. Toi,

T. Tokuzawa,

K. Y. Watanabe,

T. Watari,

Yuhong Xu,

H. Yamada,

M. Yoshinuma,

K. Itoh,

Κ. Ohkubo,

T. Satow,

S. Sudo,

Taizo Uda,

K. Yamazaki,

Yoshinori Hamada,

K. Matsuoka,

O. Motojima,

Masami Fujiwara,

T. Notake,

N. Takeuchi,

Y. Torii,

S. Yamamoto,

Takashi Yamamoto,

T. Akiyama,

P. R. Goncharov,

T. Saida,

H. Kawazome,

Hideaki Nozato

Publication year - 2003

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.1560613

Subject(s) - atomic physics , ambipolar diffusion , plasma , neon , electron temperature , electron , ion , physics , electron cyclotron resonance , neutral beam injection , electron density , electric field , argon , tokamak , nuclear physics , quantum mechanics

An internal transport barrier (ITB) was observed in the electron temperature profile in the Large Helical Device [O. Motojima et al., Phys. Plasmas 6, 1843 (1999)] with a centrally focused intense electron cyclotron resonance microwave heating. Inside the ITB the core electron transport was improved, and a high electron temperature, exceeding 10 keV in a low density, was achieved in a collisionless regime. The formation of the electron-ITB is correlated with the neoclassical electron root with a strong radial electric field determined by the neoclassical ambipolar flux. The direction of the tangentially injected beam-driven current has an influence on the electron-ITB formation. For the counter-injected target plasma, a steeper temperature gradient, than that for the co-injected one, was observed. As for the ion temperature, high-power NBI (neutral beam injection) heating of 9 MW has realized a central ion temperature of 5 keV with neon injection. By introducing neon gas, the NBI absorption power was increased in low-density plasmas and the direct ion heating power was much enhanced with a reduced number of ions, compared with hydrogen plasmas

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