On the bicoherence analysis of plasma turbulence

K. Itoh, Y. Nagashima, S. I. Itoh, P. H. Diamond, A. Fujisawa, M. Yagi, A. Fukuyama

研究成果: Contribution to journalArticle査読

51 被引用数 (Scopus)

抄録

The bicoherence of fluctuations in a system of drift waves and zonal flows is discussed. In strong drift-wave turbulence, where broadband fluctuations are excited, the bicoherence is examined. A Langevin equation formalism of turbulent interactions allows us to relate the bicoherence coefficient to the projection of nonlinear force onto the test mode. The dependence of the summed bicoherence on the amplitude of zonal flows is clarified. The importance of observing biphase is also stressed. The results provide a basis for measurement of nonlinear interaction in a system of drift waves and zonal flow.

本文言語英語
論文番号102301
ページ(範囲)1-9
ページ数9
ジャーナルPhysics of Plasmas
12
10
DOI
出版ステータス出版済み - 2005

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学

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