Intermittency of the density fluctuations and its influence on the radial transport in the boundary of J-TEXT |
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Authors: | Zhu Meng-Zhou Zhuang Ge Wang Zhi-Jiang Pan Yuan |
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Affiliation: | College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;Key Laboratory of Fusion and Advanced Electromagnetic Technology of Ministry of Education, Wuhan 430074, China |
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Abstract: | To improve the understanding of the turbulence intermittency, a detailed investigation of the intermittency of the density fluctuations has been performed in the boundary of J-TEXT. The intermittency of the density fluctuations and its influence on the radial transport are reported. The probability distribution functions of the density fluctuations are not scale-invariant, being inconsistent with the self-organized criticality hypothesis. The underlying dynamics of the intermittency are detected using the quiet-time statistical method. The probability distribution function of the quiet times shows double-power-law regions, indicating the existence of correlations between the successive burst events. |
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Keywords: | intermittency radial transport J-TEXT |
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