25 years of dust acoustic waves

Abstract

The dust acoustic wave (DAW) was first discussed by P. K. Shukla in May of 1989 at the First Capri Workshop on Dusty Plasmas. In the past 25 years, the subsequent publication of the linear and nonlinear properties of the DAW (Rao, N. N., Shukla, P. K. and Yu, M. Y. 1990 Planet. Space Sci.38, 543) has generated and sustained a large body of theoretical and experimental research that has clarified the physics of collective effects in dusty plasmas. A unique feature of the DAW is that it can be observed (literally) using laser illumination and high-speed videography, revealing details of wave-particle interactions at an unprecedented single particle level. This paper attempts to review some of the contributions and extensions of dust acoustic wave physics, as well as identify recent findings that illustrate the potential importance of this dust wave in the agglomeration of dust particles.

Volumetric measurement of synchronization of the dust acoustic wave with an external modulation

“…Among the new phenomena that are supported by the presence of the charged dust is a a low-frequency, longitudinal wave mode known as the dust acoustic (or dust density) wave that is self-excited by the free energy from the ion streaming through the dust component. [1] Since the initial prediction [2] and experimental observation [3] of this wave mode, the dust acoustic wave has been the subject of intense experimental and theoretical study owing in part to the fact that the large particle size and long characteristic time scales of the dust component (with characteristic frequencies in tens of Hz) make this system relatively easy to access experimentally and allows for the study of the wave's properties at both the global and individual particle level with incredible spatial resolution. [4][5][6] In the laboratory setting, the wave that is typically observed is nonlinear and simultaneously supports a number of wave modes.…”

Fluid approach to evaluate sound velocity in Yukawa systems and complex plasmas

“…For other aspects of DAWs and their significance for the field of dusty (complex) plasmas see, for instance, Refs. [21][22][23] and references therein.…”

“…Molecular dynamics (MD) simulations have also been performed to obtain * Also at Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia wave dispersion relations in strongly coupled Yukawa fluids [35,36]. From experimental point of view, the topic has also received some attention [23,37,38]. Overall, the effect of strong coupling on weave phenomena in complex plasmas remains a very important current research topic [23].…”

“…From experimental point of view, the topic has also received some attention [23,37,38]. Overall, the effect of strong coupling on weave phenomena in complex plasmas remains a very important current research topic [23].…”

Stereoscopic imaging of dusty plasmas

“…A wide variety of experiments have been performed on the structure and dynamics of these dust systems, see e.g. Shukla (2001), Fortov, Vaulina & Petrov (2005), Bonitz et al (2008), Piel et al (2008), Shukla & Eliasson (2009), Melzer et al (2010), Merlino (2014).…”