Abstract
The steady state formed by the diffusion of plasma particles inan inhomogeneous dusty plasma is investigatedtheoretically and compared with our previous experimental results [Nucl. Fusion Plasma Phys. 20(2000)180 (in Chinese); Phys. Plasmas8(2001)1459]. The negativelycharged dust grains with an average charge number of the order of105 on a single grain enhance theplasma inhomogeneity by decreasing the diffusion velocity,and can cause significant depletion of electrons.The theoreticalelectron density profile is in good agreement withthe experiment, and the theoretical profile ofthe electron-to-iondensity ratio is in reasonable agreement with experimentallyestimated data.
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