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Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union
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Volume 5, issue 1
Nonlin. Processes Geophys., 5, 53–62, 1998
https://doi.org/10.5194/npg-5-53-1998
© Author(s) 1998. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
Nonlin. Processes Geophys., 5, 53–62, 1998
https://doi.org/10.5194/npg-5-53-1998
© Author(s) 1998. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  31 Mar 1998

31 Mar 1998

The nonlinear dustgrain-charging on large amplitude electrostatic waves in a dusty plasma with trapped ions

Y.-N. Nejoh Y.-N. Nejoh
  • Graduate School of Engineering and Department of Electronic Engineering, Hachinohe Institute of Technology, Myo-Obaraki, Hachinohe, 031-8501, Japan

Abstract. The nonlinear dustgrain-charging and the influence of the ion density and temperature on electrostatic waves in a dusty plasma having trapped ions are investigated by numerical calculation. This work is the first approach to the effect of trapped ions in dusty plasmas. The nonlinear variation of the dust-charge is examined, and it is shown that the characteristics of the dustcharge number sensitively depend on the plasma potential, Mach number, dust mass-to-charge ratio, trapped ion density and temperature. The fast and slow wave modes are shown in this system. An increase of the ion temperature decreases the dust-charging rate and the propagation speed of ion waves. It is found that the existence of electrostatic ion waves sensitively depends on the ion to electron density ratio. New findings of the variable-charge dust grain particles, ion density and temperature in a dusty plasma with trapped ions are predicted.

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