Nonlinear evolution of a single coherent mode in a turbulent plasma

作者:Mendonca J T*; Galvao R M O; Smolyakov A I
来源:Plasma Physics and Controlled Fusion, 2014, 56(5): 055004.
DOI:10.1088/0741-3335/56/5/055004

摘要

We consider the excitation, nonlinear evolution and saturation of a single coherent mode in a turbulent plasma background. We adopt a generic wave-kinetic description of plasma turbulence, based on a Wigner-Moyal equation, which stays valid well beyond the geometric optics approximation. We illustrate our model by considering the case of a geodesic acoustic mode in a tokamak plasma, in the presence of a broad spectrum of drift wave turbulence.

  • 出版日期2014-5
  • 单位Saskatoon; Saskatchewan