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Steady State of the Dusty Plasma in a dc Discharge
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| MA Jin-Xiu1;YU Ming Young2;LIANG Xiao-Ping3;ZHENG Jian1;LIU Wan-Dong1;YU Chang-Xuan1 |
| 1Department of Modern Physics, University of Science and Technology of China, Hefei 230027
2Ruhr-Universität Bochum, Institut für Theoretische Physik I, D-44780 Bochum, F. R. Germany
33001 EUIII Department of Applied Science, University of California, Davis, Davis, CA 95616, USA
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| Cite this article: |
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MA Jin-Xiu, YU Ming Young, LIANG Xiao-Ping et al 2002 Chin. Phys. Lett. 19 695-697 |
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Abstract The steady state formed by the diffusion of plasma particles in an inhomogeneous dusty plasma is investigated theoretically and compared with our previous experimental results [Nucl. Fusion Plasma Phys. 20(2000)180 (in Chinese); Phys. Plasmas 8(2001)1459]. The negatively charged dust grains with average charge number of the order of 105 on a single grain enhance the plasma inhomogeneity by decreasing the diffusion velocity, and can cause significant depletion of electrons. The theoretical electron density profile is in good agreement with the experiment, and the theoretical profile of the electron-to-ion density ratio is in reasonable agreement with experimentally estimated data.
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| Keywords:
52.25.Zb
52.25.Vy
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Published: 01 May 2002
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