Details

Autor(en) / Beteiligte

• Xanthopoulos, P
• Mischchenko, A
• Helander, P
• Sugama, H
• Watanabe, T-H

Titel

Zonal flow dynamics and control of turbulent transport in stellarators

Ist Teil von

• Physical review letters, 2011-12, Vol.107 (24), p.245002-245002, Article 245002

Ort / Verlag

United States

Erscheinungsjahr

2011

Link zum Volltext

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• The relation between magnetic geometry and the level of ion-temperature-gradient (ITG) driven turbulence in stellarators is explored through gyrokinetic theory and direct linear and nonlinear simulations. It is found that the ITG radial heat flux is sensitive to details of the magnetic configuration that can be understood in terms of the linear behavior of zonal flows. The results throw light on the question of how the optimization of neoclassical confinement is related to the reduction of turbulence.