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Original Paper
Dynamics of Dislocations in a 2D Plasma Crystal
Article first published online: 28 MAY 2009
DOI: 10.1002/ctpp.200910022
Copyright © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
1521-3986/asset/cover.gif?v=1&s=4b03e1cc66b0b8a69dc1696d82dc79777f177658 "Contributions to Plasma Physics")
Additional Information
How to Cite
Nosenko, V. and Zhdanov, S. K. (2009), Dynamics of Dislocations in a 2D Plasma Crystal. Contrib. Plasma Phys., 49: 191–198. doi: 10.1002/ctpp.200910022
Publication History
- Issue published online: 28 MAY 2009
- Article first published online: 28 MAY 2009
- Manuscript Accepted: 3 MAR 2009
- Manuscript Received: 19 DEC 2008
- Abstract
- References
- Cited By
Keywords:
- Plasma crystal;
- dislocation dynamics;
- Mach cone
Abstract
Recent experimental results on the dislocation dynamics in a two-dimensional plasma crystal are reviewed. A single layer of micron-size microspheres was suspended in the sheath of a capacitively coupled rf discharge. The particles self-organized in a triangular lattice. Edge dislocations were created in pairs in this plasma crystal when the internal shear stress built up above a threshold, due to the crystal's slow differential rotation. Basic stages of dislocation nucleation were identified and studied, from gradual pile-up of shear strain in the crystal to eventual escape of free dislocations. After nucleation, dislocations moved supersonically with respect to the shear waves and generated shear-wave Mach cones (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)