Artículo
Experimental investigation of geodesic acoustic modes on JET using Doppler backscattering
Autor/es | Silva, C.
Hillesheim, J.C. Hidalgo, C. Belonohy, E. Delabie, E. Jet Contributors García Muñoz, Manuel |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2016-10 |
Fecha de depósito | 2020-08-27 |
Publicado en |
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Resumen | Geodesic acoustic modes (GAMs) have been investigated in JET ohmic discharges using
mainly Doppler backscattering. Characteristics and scaling properties of the GAM are studied.
Time and spatial resolved measurements of ... Geodesic acoustic modes (GAMs) have been investigated in JET ohmic discharges using mainly Doppler backscattering. Characteristics and scaling properties of the GAM are studied. Time and spatial resolved measurements of the perpendicular velocity indicate that GAMs are located in a narrow layer at the edge density gradient region with amplitude corresponding to about 50% of the mean local perpendicular velocity. GAMs on JET appear to be regulated by the turbulence drive rather than by their damping rate. It is also shown that the GAM amplitude is ~20% larger in deuterium than in hydrogen plasmas. |
Identificador del proyecto | 633053
UID/FIS/50010/2013 |
Cita | Silva, C., Hillesheim, J.C., Hidalgo, C., Belonohy, E., Delabie, E., Jet Contributors, y García Muñoz, M. (2016). Experimental investigation of geodesic acoustic modes on JET using Doppler backscattering. Nuclear Fusion, 56 (10), 106026-. |
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