Energy Confinement Time and Heat Transport in Initial Neutral Beam Heated Plasmas on the Large Helical Device | Zendy

H. Yamada | Zendy; K. Y. Watanabe | Zendy; S. Sakakibara | Zendy; S. Murakami | Zendy; M. Osakabe | Zendy; O. Kaneko | Zendy; K. Narihara | Zendy; K. Tanaka | Zendy; K. Ida | Zendy; T. Minami | Zendy; M. Goto | Zendy; H. Idei | Zendy; S. Inagaki | Zendy; S. Kado | Zendy; K. Kawahata | Zendy; A. Komori | Zendy; S. Kubo | Zendy; J. Miyazawa | Zendy; T. Morisaki | Zendy; S. Morita | Zendy; H. Nakanishi | Zendy; S. Ohdachi | Zendy; N. Ohyabu | Zendy; Y. Oka | Zendy; B. J. Peterson | Zendy; R. Sakamoto | Zendy; M. Shoji | Zendy; Hidehiko Suzuki | Zendy; Y. Takeiri | Zendy; K. Toi | Zendy; T. Tokuzawa | Zendy; K. Tsumori | Zendy; Ippei Yamada | Zendy; K. Ohkubo | Zendy; S. Sudo | Zendy; K. Yamazaki | Zendy; O. Motojima | Zendy; M. Fujiwara | Zendy; LHD Experimental Group | Zendy

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Energy Confinement Time and Heat Transport in Initial Neutral Beam Heated Plasmas on the Large Helical Device

Author(s) -

H. Yamada,

K. Y. Watanabe,

S. Sakakibara,

S. Murakami,

M. Osakabe,

O. Kaneko,

K. Narihara,

K. Tanaka,

K. Ida,

T. Minami,

M. Goto,

H. Idei,

S. Inagaki,

S. Kado,

K. Kawahata,

A. Komori,

S. Kubo,

J. Miyazawa,

T. Morisaki,

S. Morita,

H. Nakanishi,

S. Ohdachi,

N. Ohyabu,

Y. Oka,

B. J. Peterson,

R. Sakamoto,

M. Shoji,

Hidehiko Suzuki,

Y. Takeiri,

K. Toi,

T. Tokuzawa,

K. Tsumori,

Ippei Yamada,

K. Ohkubo,

S. Sudo,

K. Yamazaki,

O. Motojima,

M. Fujiwara,

LHD Experimental Group

Publication year - 2000

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.84.1216

Subject(s) - large helical device , pedestal , plasma , atomic physics , scaling , beam (structure) , enhanced data rates for gsm evolution , core (optical fiber) , physics , materials science , stellarator , plasma confinement , neutral beam injection , energy transport , tokamak , nuclear physics , optics , telecommunications , geometry , mathematics , archaeology , engineering physics , computer science , history

The confinement characteristics of large net-current-free plasmas heated by neutral-beam injection have been investigated in the Large Helical Device (LHD). A systematic enhancement in energy-confinement times from the scaling derived from the medium-sized heliotron/torsatron experiments have been observed, which is attributed to the edge pedestal. The core confinement is scaled with the Bohm term divided by the square root of the gyro radii. The comparative analysis using a dimensionally similar discharge in the Compact Helical System indicates gyro-Bohm dependence in the core and transport improvement in the edge region of LHD plasmas.

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