Electron geodesic acoustic modes in electron temperature gradient mode turbulence
Artikel i vetenskaplig tidskrift, 2012

In this work, the first demonstration of an electron branch of the geodesic acoustic mode (el-GAM) driven by electron temperature gradient (ETG) modes is presented. The work is based on a fluid description of the ETG mode retaining non-adiabatic ions and the dispersion relation for el-GAMs driven nonlinearly by ETG modes is derived. A new saturation mechanism for ETG turbulence through the interaction with el-GAMs is found, resulting in a significantly enhanced ETG turbulence saturation level compared to the mixing length estimate.

Författare

Johan Anderson

Chalmers, Rymd- och geovetenskap, Transportteori

Hans Nordman

Chalmers, Rymd- och geovetenskap, Transportteori

Raghvendra Singh

Institute for Plasma Research India

P.K. Kaw

Institute for Plasma Research India

Physics of Plasmas

1070-664X (ISSN) 1089-7674 (eISSN)

Vol. 19 082305

Styrkeområden

Energi

Fundament

Grundläggande vetenskaper

Ämneskategorier

Fusion, plasma och rymdfysik

DOI

10.1063/1.4742321