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• 日球层物理和太阳系探测 • Previous Articles     Next Articles

Dust Acoustic Wave in Dusty Plasmas With Streaming Ions Under Ultraviolet Irradiation

REN Liwen, WANG Chi   

  1. State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190
  • Received:2011-01-10 Revised:2011-11-24 Online:2012-03-15 Published:2012-03-15

Abstract: The reductive perturbation method is applied to investigate the dust acoustic soliton in dusty plasmas with streaming ions under ultraviolet irradiation theoretically and numerically. The self-consistent dust charge variation is taken into account. It is shown that the ultraviolet irradiation can significantly lower the magnitude of the dust negative charge, and ion streaming velocity firstly raise the magnitude of the dust negative charge and then lower it. With the growth of (Ultraviolet) UV photo flux or ion streaming velocity, the phase velocity and width of the solitary waves decrease, whereas its amplitude increases.

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