dc.citation.conferencePlace |
KO |
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dc.citation.conferencePlace |
Daejeon |
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dc.citation.title |
한국물리학회 2015년 봄 학술논문발표회 |
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dc.contributor.author |
Park, Hyeon Keo |
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dc.contributor.author |
Lee, Jieun |
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dc.contributor.author |
Lee, Jaehyun |
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dc.contributor.author |
Kim, Minwoo |
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dc.contributor.author |
Yun, Gunsu |
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dc.contributor.author |
Lee, Woochang |
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dc.contributor.author |
Ko, Wonha |
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dc.date.accessioned |
2023-12-19T22:37:29Z |
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dc.date.available |
2023-12-19T22:37:29Z |
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dc.date.created |
2016-01-07 |
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dc.date.issued |
2015-04-23 |
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dc.description.abstract |
Changes of the toroidal mode number (n) of the edge localized modes (ELMs) have been observed during the ELM evolution phase in several KSTAR discharges. The mode transition always accompanined a discrete change of the mode frequency and it typically lasted for a few hundreds of micro seconds. While the global parameters (stored energy, plasma current, shape, etc.) did not change very much (~2%), the toroidal velocity gradient and the ion temperature gradient at the pedestal considerably changed through the mode transition.Two classes of mode number transitions were identified: overlapping transitions and non-overlapping transitions. In the former case, another filamentary mode structure appears and co-exists with the original mode structure and it persists after the original one perishes. On the other hand, in the latter case, the coherent filamentary structure disappears temporarily and re-appears with a different mode number during the transition. These phenomena may help to understand the previous observation on the ELM crash dynamics where a rapid mode number change preceded the ELM crash [1]. *Work supported by the NRF of Korea under contract No. 2014M1A7A1A03029881 and the BK21+ program. |
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dc.identifier.bibliographicCitation |
한국물리학회 2015년 봄 학술논문발표회 |
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dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/42118 |
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dc.identifier.url |
http://www.kps.or.kr/home/kor/symposium/abstract/abstract_view3.asp?auid=%7B50A8A751-282F-458E-8974-F11D5CE26CB1%7D |
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dc.language |
한국어 |
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dc.publisher |
한국물리학회 |
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dc.title |
Change of the toroidal mode number of the edge localized modes during ELM evolution in KSTAR plasma |
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dc.type |
Conference Paper |
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dc.date.conferenceDate |
2015-04-22 |
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