Dynamics of cluster particles in a dense plasma

Details Dynamics of cluster particles in a dense plasma Dynamics of cluster particles in a dense plasma

Jan 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006njph....8..203y&link_type=abstract

New Journal of Physics, Volume 8, Issue 9, pp. 203 (2006).

Physics

4

Scientific paper

Detailed analysis of the particle dynamics in a small cluster (4 grains), suspended inside a dense plasma, is presented. Estimations of the forces providing the particle equilibrium and main plasma parameters are discussed. The simple 'dipole' model of binary dust dust interactions has been employed to explain the observed distortion of the cluster by a particle rotating beneath. The measured force acting on two different cluster particles revealing pronounced vertical motion is compared with a theoretical model. The good qualitative agreement between measured and theoretical curves strongly suggests that attractive forces due to particle wake interactions can be communicated not only downstream in the flowing plasma, but in the case of very dense plasmas, also upstream. This is a phenomenon not previously observed.

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