Electrostatic waves in dusty plasmas with variable charge on dust particles

Details Electrostatic waves in dusty plasmas with variable charge on dust particles Electrostatic waves in dusty plasmas with variable charge on dust particles

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..784..521d&link_type=abstract

MAGNETIC FIELDS IN THE UNIVERSE: From Laboratory and Stars to Primordial Structures. AIP Conference Proceedings, Volume 784, pp

Computer Science

Dusty Plasmas, Plasma Electrostatic Waves, Fluctuations, Dusty Or Complex Plasmas, Plasma Crystals, Electrostatic Waves And Oscillations, Magnetized Plasmas

Scientific paper

In this work we present results obtained using a kinetic approach for parallel propagation of waves in a homogeneous magnetized dusty plasma. In this magnetized plasma we consider embedded spherical dust grains with constant radius and variable charge. We consider that the principal process of dust charging is by capture of electrons and ions of the plasma, and use a cross-section derived from the orbital motion limited theory to describe this process. We concentrate on electrostatic waves and obtain the dispersion relation, which is applied to Langmuir oscillations, taking into account those effects due to charge fluctuation which do not contain terms with the derivative of the charging cross-section, and using an approximation for the collision frequency between plasma particles and dust particles. We also analyse the competition between Landau damping and the damping that results from the electric charge variation of the dust particles.

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