Charge on the dust in the plasma

Details Charge on the dust in the plasma Charge on the dust in the plasma

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011phrve..83a6401p&link_type=abstract

Physical Review E, vol. 83, Issue 1, id. 016401

Physics

3

Dusty Or Complex Plasmas, Plasma Crystals, Mhd Waves, Plasma Waves, And Instabilities, Magnetohydrodynamics And Plasmas

Scientific paper

The grain in the plasma gets charged until the net plasma flux to the grain surface vanishes. In the absence of any analytical formula, this ambipolar condition is utilized to compute the grain charge indirectly. The present work proposes an approximate analytical expression for the grain charge that is exact in the asymptotic limit and in which the relative error between analytical and numerically computed solutions is less than 3%. Using this formula, we show that, much like the plasma sheath, the Bohm criterion is satisfied near the dust surface.

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