Speed Distribution Characteristics of Supersonic Dust Particles in Dusty Plasmas

Details Speed Distribution Characteristics of Supersonic Dust Particles in Dusty Plasmas Speed Distribution Characteristics of Supersonic Dust Particles in Dusty Plasmas

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p23b1631t&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #P23B-1631

Physics

[0399] Atmospheric Composition And Structure / General Or Miscellaneous

Scientific paper

Supersonic dust particles traveling below a two dimensional strongly-coupled dusty plasma disk were detected. The Coulomb crystal consisting of electrically charged microspheres was arranged in a hexagonal lattice in a horizontal plane and levitated in a parabolic potential well. During the formation of the crystal occasionally, one to several of the microspheres becomes trapped below the crystal exhibiting supersonic stochastic flight characteristics. Speed distribution and trajectory plots of the supersonic particles indicate non Levy flight characteristics. The speed distribution of the particles is non Maxwellian and increases quadratically with a sharp cutoff. Particle position charts show oscillatory motion at a frequency of 2 Hz.

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