| Title | Two-Dimensional Visualization of Growth and Burst of the Edge-Localized Filaments in KSTAR H-Mode Plasmas |
| Publication Type | Journal Article |
| Year of Publication | 2011 |
| Authors | G.S Yun, W. Lee, M.J Choi, J. Lee, H.K Park, B. Tobias, C.W. Domier, NC Luhmann, Jr., A.JH Donne, J.H Lee |
| Journal | Physical Review Letters |
| Volume | 107 |
| Issue | 4 |
| Pagination | 045004 |
| Date Published | Jul |
| Type of Article | Article |
| ISBN Number | 0031-9007 |
| Keywords | DYNAMICS, ELMs, PEDESTAL, TOKAMAKS, TRANSPORT |
| 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. |
| DOI | 10.1103/PhysRevLett.107.045004 |
| Division | FP |
| Department | TP |
| PID | 0428aa45a7c64f4ad56518648d3a2003 |
| Alternate Title | Phys. Rev. Lett. |
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