Dipole-dipole interaction of dust grains in plasmas

Details Dipole-dipole interaction of dust grains in plasmas Dipole-dipole interaction of dust grains in plasmas

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..799...59t&link_type=abstract

NEW VISTAS IN DUSTY PLASMAS: Fourth International Conference on the Physics of Dusty Plasmas. AIP Conference Proceedings, Volum

Physics

1

Dusty Plasmas, Electric Moments, Dust, Trapped Ions, Dusty Or Complex Plasmas, Plasma Crystals, Particle Orbits

Scientific paper

Complete screening of the negative dust grain charge by a cloud of trapped ions in plasmas is investigated. In the external electric field, the compound dust particle - ``dust grain + ion cloud'' acquires a dipole moment due to displacement of the centers of positive and negative charges in the opposite directions. By analogy to the Van der Waals potential, the dipole-dipole interaction of the compound dust particles can have an attractive behavior. It is shown that the dipole-dipole attractive force can exceed the shadowing force that is connected with the reciprocal interception of ions by the neighboring dust grains.

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