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(EX/P4-12) Self-similarity of the HL-1M tokamak Plasma Edge Turbulence

Yuan Huang1)
1) Southwestern Institute of Physics, Chengdu, China

Abstract.  The rescaled range statistics technique is utilized to investigate long-range correlations and self-similarity in HL-1M plasma edge fluctuations. It was found that electrostatic fluctuations and induced particle flux at HL-1M plasma edge are self similar over the mesoscale range of time scales, that is, for time scales between 10 times turbulence decorrelation time and plasma confinement time. The value of Hurst parameter, H, ranging from 0.64 to 0.78, implies the existence of long-range correlations and shows the self-similarity of the HL-1M tokamak plasma edge fluctuations.

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IAEA 2003