Artículo
Stationary Zonal Flows during the Formation of the Edge Transport Barrier in the JET Tokamak
Autor/es | Hillesheim, J.C.
Delabie, E. Meyer, H. Maggi, C. F. Meneses, L. Jet Contributors García Muñoz, Manuel |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2016-02 |
Fecha de depósito | 2020-08-27 |
Publicado en |
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Resumen | High spatial resolution Doppler backscattering measurements in JET have enabled new insights into the
development of the edge Er. We observe fine-scale spatial structures in the edge Er well with a wave
number krρi ≈ ... High spatial resolution Doppler backscattering measurements in JET have enabled new insights into the development of the edge Er. We observe fine-scale spatial structures in the edge Er well with a wave number krρi ≈ 0.4–0.8, consistent with stationary zonal flows, the characteristics of which vary with density. The zonal flow amplitude and wavelength both decrease with local collisionality, such that the zonal flow E × B shear increases. Above the minimum of the L-H transition power threshold dependence on density, the zonal flows are present during L mode and disappear following the H-mode transition, while below the minimum they are reduced below measurable amplitude during L mode, before the L-H transition |
Identificador del proyecto | 633053 |
Cita | Hillesheim, J.C., Delabie, E., Meyer, H., Maggi, C.F., Meneses, L., Jet Contributors, y García Muñoz, M. (2016). Stationary Zonal Flows during the Formation of the Edge Transport Barrier in the JET Tokamak. Physical Review Letters, 116 (6), 065002-. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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PhysRevLett.116.065002.pdf | 564.6Kb | [PDF] | Ver/ | |