Dynamical behaviors of nonlinear dust acoustic waves: From plane waves to dust acoustic wave turbulence

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题名:	Dynamical behaviors of nonlinear dust acoustic waves: From plane waves to dust acoustic wave turbulence
作者:	伊林;Tsai, Ya-Yi;Chang, Mei-Chu;I., Lin
贡献者:	理學院物理學系
关键词:	Acoustics;Density;Dust;Fluid dynamics;Fluid flow;Nonlinearity;Physics of Dusty Plasmas;Plasma physics;Propagation;Turbulence;Turbulent flow;Vortices
日期:	2014-12-12
上传时间:	2026-04-23 11:52:02 (UTC+8)
出版者:	Cambridge University Press;Cambridge, UK: Cambridge University Press
摘要:	摘要： The dust acoustic wave (DAW), associated with longitudinal dust oscillations in dusty plasmas, can be self-excited from the free energy of ion streaming. It is not only a fundamental plasma wave but also a paradigm to understand the generic dynamical behaviors of self-excited nonlinear longitudinal density waves through optically monitoring particle motion and dust density evolutions over a large area. In this paper, the dynamical behaviors of the wave-particle interaction and wave breaking in ordered self-excited DAW with straight wave fronts, and the defect-mediated wave turbulence with fluctuating defects and chaotic low amplitude hole filaments along defect trajectories in the 2+1D space-time space, are briefly reviewed. The first experimental observation of acoustic vortices with helical waveforms in self-excited acoustic-type defect-mediated wave turbulence, and the dynamics of spontaneous pair generation, propagation, and pair annihilation of acoustic vortices, is demonstrated and discussed. 其他題名： J. Plasma Phys 出版者： Cambridge, UK: Cambridge University Press 出版日期： 2014-12-01 出處： Journal of plasma physics, 2014-12, Vol.80 (6), p.809-816 資源來源： ProQuest 版權： Copyright © Cambridge University Press 2014 識別號： ISSN: 0022-3778 識別號： EISSN: 1469-7807 識別號： DOI: 10.1017/S0022377814000324
显示于类别:	[物理學系] 期刊論文

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