Collisionless Dynamical Friction and Relaxation in a Simple Drift Wave-Zonal Flow Turbulence

スポンサーリンク

概要

• 論文の詳細を見る

• We present a study of the role of zonal flows in relaxation and transport in a reduced model of collisionless ITG turbulence. A fundamentally new constituent in the relaxation dynamics is revealed, namely that ion and electron guiding center motion togather necessitate a radial flux of polarization charge, which in turn exerts a dynamical friction on phase space density evolution. This effect then enters the evolution of δf2 and the transport dynamics, as described by a Lenard-Balescu type equation. The underlying physics is similar to that which follows from conservation of potential vorticity, albeit now for a phase space fluid, and is not simple shearing or wave packet modulation. Consequences for zonal flow momentum balance are discussed.

• 社団法人 プラズマ・核融合学会の論文

著者

• Diamond Patrick

  Center For Astrophysics And Space Sciences University Of California

• DIAMOND Patrick

  Center for Astrophysics and Space Sciences, University of California, San Diego, La Jolla 92093, USA

• KOSUGA Yusuke

  Center for Astrophysics and Space Sciences, University of California, San Diego, La Jolla 92093, USA

関連論文

• Coexistence of Zonal Flows and Drift-Waves in a Cylindrical Magnetized Plasma(Gases, plasmas, electric discharges, and beams)
• Causal Relationship between Zonal Flow and Turbulence in a Toroidal Plasma(Gases, plasmas, electric discharges, and beams)
• Collisionless Dynamical Friction and Relaxation in a Simple Drift Wave-Zonal Flow Turbulence

スポンサーリンク