Observation of Blobs and Holes in the Boundary Plasma of EAST Tokamak

Ning Yan; Guosheng Xu; Wei Zhang; Jiafeng Chang; Liang Wang; Shaocheng Liu; Peng Liu; Huiqian Wang; Min Jiang; Hao Xiong; Siye Ding; Baonian Wan; Xiang Gao; Volker Naulin; Anders Henry Nielsen; Jens Juul Rasmussen

doi:10.1088/1009-0630/13/4/05

Observation of Blobs and Holes in the Boundary Plasma of EAST Tokamak

Ning Yan, Guosheng Xu, Wei Zhang, Jiafeng Chang, Liang Wang, Shaocheng Liu, Peng Liu, Huiqian Wang, Min Jiang, Hao Xiong, Siye Ding, Baonian Wan, Xiang Gao, Volker Naulin, Anders Henry Nielsen, Jens Juul Rasmussen

Chinese Academy of Sciences

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Intermittent convective transport at the edge and in the scrape-off layer (SOL) of EAST was investigated by using fast reciprocating Langmuir probe. Holes, as part of plasma structures, were detected for the first time inside the shear layer. The amplitude probability distribution function of the turbulence is strongly skewed, with positive skewed events (“blobs") prevailing in the SOL region and negative skewed events (“holes") dominant inside the shear layer. The statistical properties coincide with previous observations from JET. The generation mechanism of blobs and holes is also discussed. In addition burst structure and dynamics character of them are also presented.

Original language	English
Journal	Plasma Science and Technology
Volume	13
Issue number	4
Pages (from-to)	410-414
ISSN	1009-0630
DOIs	https://doi.org/10.1088/1009-0630/13/4/05
Publication status	Published - 2011

Keywords

Fusion energy

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10.1088/1009-0630/13/4/05

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title = "Observation of Blobs and Holes in the Boundary Plasma of EAST Tokamak",

abstract = "Intermittent convective transport at the edge and in the scrape-off layer (SOL) of EAST was investigated by using fast reciprocating Langmuir probe. Holes, as part of plasma structures, were detected for the first time inside the shear layer. The amplitude probability distribution function of the turbulence is strongly skewed, with positive skewed events (“blobs{"}) prevailing in the SOL region and negative skewed events (“holes{"}) dominant inside the shear layer. The statistical properties coincide with previous observations from JET. The generation mechanism of blobs and holes is also discussed. In addition burst structure and dynamics character of them are also presented.",

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author = "Ning Yan and Guosheng Xu and Wei Zhang and Jiafeng Chang and Liang Wang and Shaocheng Liu and Peng Liu and Huiqian Wang and Min Jiang and Hao Xiong and Siye Ding and Baonian Wan and Xiang Gao and Volker Naulin and Nielsen, {Anders Henry} and {Juul Rasmussen}, Jens",

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doi = "10.1088/1009-0630/13/4/05",

language = "English",

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pages = "410--414",

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TY - JOUR

T1 - Observation of Blobs and Holes in the Boundary Plasma of EAST Tokamak

AU - Yan, Ning

AU - Xu, Guosheng

AU - Zhang, Wei

AU - Chang, Jiafeng

AU - Wang, Liang

AU - Liu, Shaocheng

AU - Liu, Peng

AU - Wang, Huiqian

AU - Jiang, Min

AU - Xiong, Hao

AU - Ding, Siye

AU - Wan, Baonian

AU - Gao, Xiang

AU - Naulin, Volker

AU - Nielsen, Anders Henry

AU - Juul Rasmussen, Jens

PY - 2011

Y1 - 2011

N2 - Intermittent convective transport at the edge and in the scrape-off layer (SOL) of EAST was investigated by using fast reciprocating Langmuir probe. Holes, as part of plasma structures, were detected for the first time inside the shear layer. The amplitude probability distribution function of the turbulence is strongly skewed, with positive skewed events (“blobs") prevailing in the SOL region and negative skewed events (“holes") dominant inside the shear layer. The statistical properties coincide with previous observations from JET. The generation mechanism of blobs and holes is also discussed. In addition burst structure and dynamics character of them are also presented.

AB - Intermittent convective transport at the edge and in the scrape-off layer (SOL) of EAST was investigated by using fast reciprocating Langmuir probe. Holes, as part of plasma structures, were detected for the first time inside the shear layer. The amplitude probability distribution function of the turbulence is strongly skewed, with positive skewed events (“blobs") prevailing in the SOL region and negative skewed events (“holes") dominant inside the shear layer. The statistical properties coincide with previous observations from JET. The generation mechanism of blobs and holes is also discussed. In addition burst structure and dynamics character of them are also presented.

KW - Fusion energy

KW - Fusionsenergiforskning

U2 - 10.1088/1009-0630/13/4/05

DO - 10.1088/1009-0630/13/4/05

M3 - Journal article

SN - 1009-0630

VL - 13

SP - 410

EP - 414

JO - Plasma Science and Technology

JF - Plasma Science and Technology

IS - 4

ER -

Observation of Blobs and Holes in the Boundary Plasma of EAST Tokamak

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