Journal
PHYSICA SCRIPTA
Volume 61, Issue 4, Pages 494-501Publisher
IOP PUBLISHING LTD
DOI: 10.1238/Physica.Regular.061a00494
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The interaction forces in a system of two single dust particles immersed in the space charge sheath of a plasma discharge has been investigated quantitatively. From different techniques the attractive force provided by the wakefield of the dust particles has been measured from direct laser manipulation of the single particles. Furthermore, a structural phase transition with hysteresis of this system from a vertically aligned dust molecule into a separated state has been observed. The forces, structures and the hysteresis have been explained by means of own previous plasma crystal models.
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