Two-Dimensional Visualization of Growth and Burst of the Edge-Localized Filaments in KSTAR H-Mode Plasmas
SCIE
SCOPUS
- Title
- Two-Dimensional Visualization of Growth and Burst of the Edge-Localized Filaments in KSTAR H-Mode Plasmas
- Authors
- Yun, GS; Lee, W; Choi, MJ; Lee, J; Park, HK; Tobias, B; Domier, CW; Luhmann, NC; Donne, AJH; Lee, JH
- Date Issued
- 2011-07-22
- Publisher
- AMER PHYSICAL SOC
- Abstract
- The filamentary nature and dynamics of edge-localized modes (ELMs) in the KSTAR high-confinement mode plasmas have been visualized in 2D via electron cyclotron emission imaging. The ELM filaments rotating with a net poloidal velocity are observed to evolve in three distinctive stages: initial linear growth, interim quasisteady state, and final crash. The crash is initiated by a narrow fingerlike perturbation growing radially from a poloidally elongated filament. The filament bursts through this finger, leading to fast and collective heat convection from the edge region into the scrape-off layer, i.e., ELM crash.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/17177
- DOI
- 10.1103/PHYSREVLETT.107.045004
- ISSN
- 0031-9007
- Article Type
- Article
- Citation
- PHYSICAL REVIEW LETTERS, vol. 107, no. 4, 2011-07-22
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