Observation of 3D defect mediated dust acoustic wave turbulence with fluctuating defects and amplitude hole filaments

2013 ◽  
Vol 20 (8) ◽  
pp. 083703 ◽  
Author(s):  
Mei-Chu Chang ◽  
Ya-Yi Tsai ◽  
Lin I
Keyword(s):  
Acoustic Wave ◽  
Wave Turbulence ◽  
Dust Acoustic Wave ◽  
Dust Acoustic

Experimental observation of dust-acoustic wave turbulence

2003 ◽  
Vol 312 (1-2) ◽  
pp. 84-90 ◽  
Author(s):  
J. Pramanik ◽  
B.M. Veeresha ◽  
G. Prasad ◽  
A. Sen ◽  
P.K. Kaw
Keyword(s):  
Acoustic Wave ◽  
Experimental Observation ◽  
Wave Turbulence ◽  
Dust Acoustic Wave ◽  
Dust Acoustic

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

2014 ◽  
Vol 80 (6) ◽  
pp. 809-816 ◽  
Author(s):  
Ya-Yi Tsai ◽  
Mei-Chu Chang ◽  
Lin I.
Keyword(s):  
Acoustic Wave ◽  
Acoustic Waves ◽  
Particle Interaction ◽  
Dusty Plasmas ◽  
Wave Turbulence ◽  
Large Area ◽  
Dust Acoustic Wave ◽  
Dynamical Behaviors ◽  
Time Space ◽  
Dust Acoustic

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.

Instability of dust acoustic wave due to nonthermal ions in a charge varying dusty plasma

2004 ◽  
Vol 11 (7) ◽  
pp. 3602-3609 ◽  
Author(s):  
Samiran Ghosh ◽  
R. Bharuthram ◽  
Manoranjan Khan ◽  
M. R. Gupta
Keyword(s):  
Acoustic Wave ◽  
Dusty Plasma ◽  
Dust Acoustic Wave ◽  
Dust Acoustic ◽  
A Charge
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