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Title: Laser-excited shear waves in solid and liquid two-dimensional dusty plasmas

Abstract

The propagation of transverse waves in a two-dimensional particle suspension in a plasma is studied in the solid and liquid phase. The different states of the suspension are realized by raising the kinetic temperature of the dust particles with a new laser method. An additional laser beam is used to excite shear waves and the wave is observed by videomicroscopy in terms of the individual velocities of the dust particles. For recovering the spatial wave patterns the method of singular value decomposition is applied and compared with the method of spatial Fourier analysis of complex wave numbers. In the solid phase, weakly damped waves are found which follow the expected dispersion relation. In the liquid phase the existence of strongly damped waves is demonstrated. The real part of the wave number is in overall agreement with the predictions of the Quasi Localized Charge Approximation model for a two-dimensional system. The damping of the waves is discussed.

Authors:
; ;  [1];  [2]
  1. IEAP, Christian-Albrechts-Universitaet, D-24098 Kiel (Germany)
  2. (United States)
Publication Date:
OSTI Identifier:
20782724
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 13; Journal Issue: 4; Other Information: DOI: 10.1063/1.2196327; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APPROXIMATIONS; CHARGED-PARTICLE TRANSPORT; DAMPING; DISPERSION RELATIONS; DUSTS; ELECTRON TEMPERATURE; FOURIER ANALYSIS; ION TEMPERATURE; LASERS; LIQUIDS; PLASMA; PLASMA DIAGNOSTICS; PLASMA HEATING; SHEAR; SOLIDS; TWO-DIMENSIONAL CALCULATIONS

Citation Formats

Piel, A., Nosenko, V., Goree, J., and Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa. Laser-excited shear waves in solid and liquid two-dimensional dusty plasmas. United States: N. p., 2006. Web. doi:10.1063/1.2196327.
Piel, A., Nosenko, V., Goree, J., & Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa. Laser-excited shear waves in solid and liquid two-dimensional dusty plasmas. United States. doi:10.1063/1.2196327.
Piel, A., Nosenko, V., Goree, J., and Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa. Sat . "Laser-excited shear waves in solid and liquid two-dimensional dusty plasmas". United States. doi:10.1063/1.2196327.
@article{osti_20782724,
title = {Laser-excited shear waves in solid and liquid two-dimensional dusty plasmas},
author = {Piel, A. and Nosenko, V. and Goree, J. and Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa},
abstractNote = {The propagation of transverse waves in a two-dimensional particle suspension in a plasma is studied in the solid and liquid phase. The different states of the suspension are realized by raising the kinetic temperature of the dust particles with a new laser method. An additional laser beam is used to excite shear waves and the wave is observed by videomicroscopy in terms of the individual velocities of the dust particles. For recovering the spatial wave patterns the method of singular value decomposition is applied and compared with the method of spatial Fourier analysis of complex wave numbers. In the solid phase, weakly damped waves are found which follow the expected dispersion relation. In the liquid phase the existence of strongly damped waves is demonstrated. The real part of the wave number is in overall agreement with the predictions of the Quasi Localized Charge Approximation model for a two-dimensional system. The damping of the waves is discussed.},
doi = {10.1063/1.2196327},
journal = {Physics of Plasmas},
number = 4,
volume = 13,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2006},
month = {Sat Apr 15 00:00:00 EDT 2006}
}