Journal article
Nonlinear dust acoustic waves and shocks
Physics of plasmas, Vol.19(5), pp.057301-057301-7
03/19/2012
DOI: 10.1063/1.3693972
Abstract
We describe experiments on (1) nonlinear dust acoustic waves and (2) dust acoustic shocks performed in a direct current (DC) glow discharge dusty plasma. First, we describe experiments showing nonlinear dust acoustic waves characterized by waveforms of the dust density that are typically sharper in the wave crests and flatter in the wave troughs (compared to sinusoidal waves), indicating the development of wave harmonics. We discuss this behavior in terms of a second-order fluid theory for dust acoustic waves. Second, experimental observations of the propagation and steepening of large-amplitude dust acoustic waves into dust acoustic shock waves are presented. The observed shock wave evolution is compared with numerical calculations based on the Riemann solution of the fully nonlinear fluid equations for dust acoustic waves.
Details
- Title: Subtitle
- Nonlinear dust acoustic waves and shocks
- Creators
- R Merlino - University of IowaJ Heinrich - University of IowaS.-H Hyun - University of IowaJ Meyer - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Physics of plasmas, Vol.19(5), pp.057301-057301-7
- Publisher
- American Institute of Physics
- DOI
- 10.1063/1.3693972
- ISSN
- 1070-664X
- eISSN
- 1089-7674
- Grant note
- PHY-0923141 / NSF DE-FG01-04ER54795 / DOE
- Date published
- 03/19/2012
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199955802771
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