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Surface Potential of Dust Grains at the Sheath Edge of Electronegative Dusty Plasmas

机译:负尘埃等离子鞘边缘的粉尘表面势

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摘要

In this paper we investigate the dust surface potential at the sheath edge of electronegative dusty plasmas theoretically, using the standard fluid model for the sheath and treating electrons and negative ions as Boltzmann particles but positive ions and dust grains as cold fluids.The dust charging model is self-consistently coupled with the sheath formation criterion by the dust surface potential and the ion Mach number, moreover the dust density variation is taken into account. The numerical results reveal that the dust number density and negative ion number density as well as its temperature can significantly affect the dust surface potential at the sheath edge.
机译:在本文中,我们使用标准的流体鞘模型并将电子和负离子视为玻尔兹曼粒子,而将正离子和尘埃粒子视为冷流体,从理论上研究电负性尘埃等离子体鞘边缘处的尘埃表面电势。通过尘埃表面电势和离子马赫数与皮层形成准则自洽地耦合,而且考虑了尘埃密度的变化。数值结果表明,尘埃数密度和负离子数密度及其温度会显着影响护套边缘处的尘埃表面电势。

著录项

  • 来源
    《等离子体科学和技术(英文版)》 |2004年第6期|2559-2563|共5页
  • 作者单位

    Department of Physics, Dalian University, Dalian 116622, China;

    State Key Lab. of Materials Modification by Laser, Electron and Ion Beams Department of Physics, Dalian University of Technology, Dalian 116024, China;

    State Key Lab. of Materials Modification by Laser, Electron and Ion Beams Department of Physics, Dalian University of Technology, Dalian 116024, China;

    State Key Lab. of Materials Modification by Laser, Electron and Ion Beams Department of Physics, Dalian University of Technology, Dalian 116024, China;

    State Key Lab. of Materials Modification by Laser, Electron and Ion Beams Department of Physics, Dalian University of Technology, Dalian 116024, China;

    State Key Lab. of Materials Modification by Laser, Electron and Ion Beams Department of Physics, Dalian University of Technology, Dalian 116024, China;

    State Key Lab. of Materials Modification by Laser, Electron and Ion Beams Department of Physics, Dalian University of Technology, Dalian 116024, China;

  • 收录信息 中国科学引文数据库(CSCD);
  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类
  • 关键词

    electronegative plasma; dust grain; dust surface potential;

    机译:负电等离子体;粉尘;粉尘表面电势;
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