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Proceedings Paper

Density fluctuation in HT-6M tokamak by CO2 laser scattering
Author(s): Lei Zeng; Jinxiang Cao; Guoliang Zhu; Weixing Ding; Chang-Xuan Yu; Daqing Zhang; Youyi Li
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Paper Abstract

The small scale density fluctuations in the interior of HT-6M Ohmic plasma have been studied by CO2 laser collective scattering system in deuterium discharges covering a wide range of nqa (chord-average density times safety factor at the limiter) and energy confinement time. The relative density fluctuation level in the interior is inversely proportional to the toroidal magnetic field and average density, and the energy confinement time (tau) E decreases with the fluctuation level increasing in the region where (tau) E linearly increases with nq0.5a and satisfies the Goldston scaling law. It is suggested that the microturbulence in the interior zone is responsible for anomalous transport in tokamaks.

Paper Details

Date Published: 10 September 1993
PDF: 7 pages
Proc. SPIE 1928, International Symposium on Laser-Plasma Interactions, (10 September 1993); doi: 10.1117/12.155787
Show Author Affiliations
Lei Zeng, Univ. of Science and Technology of China (China)
Jinxiang Cao, Univ. of Science and Technology of China (China)
Guoliang Zhu, Univ. of Science and Technology of China (China)
Weixing Ding, Univ. of Science and Technology of China (China)
Chang-Xuan Yu, Univ. of Science and Technology of China (China)
Daqing Zhang, Institute of Plasma Physics (China)
Youyi Li, Institute of Plasma Physics (China)


Published in SPIE Proceedings Vol. 1928:
International Symposium on Laser-Plasma Interactions

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