Neutral particle drag on parallel flow shear driven instability

M. Sasaki, T. Kobayashi, S. Inagaki, N. Kasuya, Y. Kosuga

研究成果: Contribution to journalArticle査読

抄録

The neutral drag effect on the parallel velocity gradient driven instability (PVG) in the presence of density inhomogeneity is theoretically investigated. The dispersion relation of PVG mode with the effect of the density gradient and neutral particle drag is derived, and its solution is analytically obtained. The neutral particle drag gives rise to the phase shift between parallel flow and electrostatic potential fluctuations and modifies the parallel compression. As a result, the stability of the PVG mode changes. It is found that the neutral particle drag does not only reduce but also enhances the instability. Specifically, near the marginal condition, the neutral particle effect suppresses the density gradient effect, and the parameter region where the PVG mode is linearly unstable significantly expands.

本文言語英語
論文番号082105
ジャーナルPhysics of Plasmas
27
8
DOI
出版ステータス出版済み - 8 1 2020

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

フィンガープリント 「Neutral particle drag on parallel flow shear driven instability」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル