Journal article
Experimental observation of cnoidal waveform of nonlinear dust acoustic waves
Physics of plasmas, Vol.25(11), p.113701
11/2018
DOI: 10.1063/1.5046402
Abstract
The experimentally measured waveform of nonlinear dust acoustic waves in a plasma is shown to be accurately described by a cnoidal function. This function, which is predicted by nonlinear theory, has broad minima and narrow peaks. Fitting the experimental waveforms to the cnoidal function also provides a measure of the wave's nonlinearity, namely, the elliptical parameter k. By characterizing experimental results at various wave amplitudes, we confirm that the parameter k increases and approaches a maximum value of unity, as the wave amplitude is increased. The underlying theory that predicts the cnoidal waveform as an exact solution of a Korteweg-de Vries model equation takes account of the streaming ions that are responsible for the spontaneous excitation of the dust acoustic waves.
Details
- Title: Subtitle
- Experimental observation of cnoidal waveform of nonlinear dust acoustic waves
- Creators
- Bin Liu - University of IowaJ Goree - University of IowaT. M Flanagan - University of IowaAbhijit Sen - Institute for Plasma ResearchSanat Kumar Tiwari - Indian Institute of Technology JammuGurudas Ganguli - United States Naval Research LaboratoryChris Crabtree - United States Naval Research Laboratory
- Resource Type
- Journal article
- Publication Details
- Physics of plasmas, Vol.25(11), p.113701
- DOI
- 10.1063/1.5046402
- ISSN
- 1070-664X
- eISSN
- 1089-7674
- Number of pages
- 8
- Grant note
- U.S. Department of Energy (http://dx.doi.org/10.13039/100000015) Indian National Science Academy (http://dx.doi.org/10.13039/100008605) 1573108; 1573629; 1579454 / National Aeronautics and Space Administration (http://dx.doi.org/10.13039/100000104) National Science Foundation (http://dx.doi.org/10.13039/100000001)
- Language
- English
- Date published
- 11/2018
- Academic Unit
- Physics and Astronomy; Mechanical Engineering
- Record Identifier
- 9984199941002771
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