10 September 1993 Density fluctuation in HT-6M tokamak by CO2 laser scattering
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Proceedings Volume 1928, International Symposium on Laser-Plasma Interactions; (1993); doi: 10.1117/12.155787
Event: Laser-Plasma Interactions: the International Symposium, 1992, Shanghai, China
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.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lei Zeng, Jinxiang Cao, Guoliang Zhu, Weixing Ding, Chang-Xuan Yu, Daqing Zhang, Youyi Li, "Density fluctuation in HT-6M tokamak by CO2 laser scattering", Proc. SPIE 1928, International Symposium on Laser-Plasma Interactions, (10 September 1993); doi: 10.1117/12.155787; https://doi.org/10.1117/12.155787
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