Further developments on observations of the Taylor instability in a dusty plasma

Pacha, K. A.; Merlino, R. L.

doi:10.1063/5.0017917

Further developments on observations of the Taylor instability in a dusty plasma

Journal Article · Mon Aug 10 00:00:00 EDT 2020 · Physics of Plasmas

DOI:https://doi.org/10.1063/5.0017917· OSTI ID:1646933

Pacha, K. A.;

We previously reported the observation of a hydrodynamic-type interchange instability occurring sporadically at the curved interface between two dust clouds of different densities, in a three-dimensional dusty plasma [Pacha et al., Phys. Plasmas 19, 014501 (2012)]. The mechanism for the instability was not conclusively identified. Further analysis of the video images has been performed, showing that the instability is associated with the appearance of large amplitude dust acoustic waves or shocks. Evidence of a dust acoustic shock at the boundary, which could drive a Richtmyer–Meshkov-type instability, will be presented. We also discuss the possibility, suggested by Avinash and Sen [Phys. Plasmas 22, 083707 (2015)], that the observed instability is due to a Rayleigh–Taylor instability driven by a component of the gravitational acceleration, which is perpendicular to the curved boundary.

Sponsoring Organization:: USDOE

OSTI ID:: 1646933

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 27; ISSN 1070-664X

Publisher:: American Institute of PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

References (11)

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Richtmyer–Meshkov instability growth: experiment, simulation and theory Holmes, Richard L.; Dimonte, Guy; Fryxell, Bruce Journal of Fluid Mechanics, Vol. 389 https://doi.org/10.1017/S0022112099004838	journal	June 1999
Dust-acoustic waves driven by an ion-dust streaming instability in laboratory discharge dusty plasma experiments Merlino, Robert L. Physics of Plasmas, Vol. 16, Issue 12 https://doi.org/10.1063/1.3271155	journal	December 2009
Observation of the Taylor instability in a dusty plasma Pacha, K. A.; Heinrich, J. R.; Kim, S. -H. Physics of Plasmas, Vol. 19, Issue 1 https://doi.org/10.1063/1.3671971	journal	January 2012
Rayleigh-Taylor instability in dusty plasma experiment Avinash, K.; Sen, A. Physics of Plasmas, Vol. 22, Issue 8 https://doi.org/10.1063/1.4928444	journal	August 2015
The instability of liquid surfaces when accelerated in a direction perpendicular to their planes. I Taylor, Geoffrey Ingram Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, Vol. 201, Issue 1065, p. 192-196 https://doi.org/10.1098/rspa.1950.0052	journal	March 1950
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Laboratory Observations of Self-Excited Dust Acoustic Shocks Heinrich, J.; Kim, S. -H.; Merlino, R. L. Physical Review Letters, Vol. 103, Issue 11 https://doi.org/10.1103/PhysRevLett.103.115002	journal	September 2009
Investigation of the Character of the Equilibrium of an Incompressible Heavy Fluid of Variable Density No authors listed Proceedings of the London Mathematical Society, Vol. s1-14, Issue 1 https://doi.org/10.1112/plms/s1-14.1.170	journal	November 1882

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