AI Article Synopsis
- The geodesic acoustic mode (GAM) is a type of high-frequency zonal flow seen in toroidal plasmas, which are a specific configuration used in fusion research.
- Researchers at TEXTOR utilize an O-mode correlation reflectometer to study how GAM influences density fluctuations caused by toroidal curvature effects.
- The study also examines the spatial distribution of these fluctuations and analyzes their impact on surrounding turbulence, comparing experimental results with theoretical models.
Article Abstract
The geodesic acoustic mode (GAM) is a high frequency branch of zonal flows, which is observed in toroidal plasmas. Because of toroidal curvature effects, density fluctuations are excited, which are investigated with the O-mode correlation reflectometer at TEXTOR. This Letter reports on the poloidal distribution of GAM induced density fluctuation and compares them with theoretical predictions. The influence of the GAM flows on the ambient turbulence is studied, too.
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| http://dx.doi.org/10.1103/PhysRevLett.97.045006 | DOI Listing |
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