Viscosity of a dusty plasma liquid

N. A. Vorona, A. V. Gavrikov, A. S. Ivanov, O. F. Petrov, V. E. Fortov, I. A. Shakhova

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24 Scopus citations

Abstract

We present the results of our experimental study of the flow of a dusty plasma liquid produced by macroparticles in an argon plasma. The dependences of shear viscosity for such a liquid on the magnitude of the external force inducing the dusty plasma liquid flow and on the plasma-generating gas pressure are analyzed. We have established that the viscosity of a dusty plasma medium decreases with increasing shear stress in it, while the viscosity of such a liquid increases with buffer gas pressure. The flow of a dusty plasma liquid under the action of an external force has been found to resemble the plastic deformation of a Bingham body. We suggest that the formation of crystal-like dusty plasma clusters in a "liquid" phase can be responsible for the non-Newtonian behavior of the dusty plasma liquid flow.

Original languageEnglish
Pages (from-to)824-830
Number of pages7
JournalJournal of Experimental and Theoretical Physics
Volume105
Issue number4
DOIs
StatePublished - Oct 2007
Externally publishedYes

Funding

This work was supported by the Presidium of the Russian Academy of Sciences of the Russian Federation under the Program for Basic Research in Extreme States of Matter (Subprogram “Thermal Physics and Mechanics of Extreme States of Matter”) and by the Russian Foundation for Basic Research, project nos. 06-02-17532, 06-02-81052, and 06-08-015484.

FundersFunder number
Russian Academy of Medical Sciences
Russian Foundation for Basic Research06-08-015484, 06-02-17532, 06-02-81052

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