DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hahn S.H. | ko |
dc.contributor.author | Ku S. | ko |
dc.contributor.author | Chang, Choong-Seock | ko |
dc.date.accessioned | 2013-03-06T10:24:57Z | - |
dc.date.available | 2013-03-06T10:24:57Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2005 | - |
dc.identifier.citation | PHYSICS OF PLASMAS, v.12, no.10 | - |
dc.identifier.issn | 1070-664X | - |
dc.identifier.uri | http://hdl.handle.net/10203/86684 | - |
dc.description.abstract | An edge localized mode event is known to transport a significant portion of pedestal plasma across the separatrix and increase the divertor heat load to a possibly intolerable level in a tokamak fusion reactor. In the present work, a large random-walk transport is introduced in a plasma edge in a guiding-center orbit following code XGC [C. S. Chang, S. H. Ku, and H. Weitzner, Phys. Plasmas 11, 2649 (2004)] to understand the effect of edge radial electric-field shear on the wall-intersection location of large-transport orbits. It is found that without an edge radial electric field, E-r, the majority of large-diffusion-induced ion orbital loss is to the outer divertor near the separatrix surface. However, with a large negative E-r in the plasma edge with the ion grad-B drift into the single-null divertor, ion orbits with their kinetic energy less than the potential energy shift their wall-intersection locations to the inner divertor, while those with their kinetic energy higher than the potential energy retain their wall intersections at the outer divertor. If the ion grad-B is away from the single-null divertor, the ion orbital loss is always to the outer wall. | - |
dc.language | English | - |
dc.publisher | AMER INST PHYSICS | - |
dc.subject | ASDEX-UPGRADE | - |
dc.subject | DIII-D | - |
dc.subject | VARIABLES | - |
dc.subject | GEOMETRY | - |
dc.subject | ENERGY | - |
dc.subject | HEAT | - |
dc.subject | ELMS | - |
dc.title | Wall intersection of ion orbits induced by fast transport of pedestal plasma over an electrostatic potential hill in a tokamak plasma edge | - |
dc.type | Article | - |
dc.identifier.wosid | 000232855800025 | - |
dc.identifier.scopusid | 2-s2.0-27644507442 | - |
dc.type.rims | ART | - |
dc.citation.volume | 12 | - |
dc.citation.issue | 10 | - |
dc.citation.publicationname | PHYSICS OF PLASMAS | - |
dc.identifier.doi | 10.1063/1.2052487 | - |
dc.contributor.localauthor | Chang, Choong-Seock | - |
dc.contributor.nonIdAuthor | Hahn S.H. | - |
dc.contributor.nonIdAuthor | Ku S. | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | ASDEX-UPGRADE | - |
dc.subject.keywordPlus | DIII-D | - |
dc.subject.keywordPlus | VARIABLES | - |
dc.subject.keywordPlus | GEOMETRY | - |
dc.subject.keywordPlus | ENERGY | - |
dc.subject.keywordPlus | HEAT | - |
dc.subject.keywordPlus | ELMS | - |
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