Acta Mechanica Sinica

, Volume 5, Issue 4, pp 369–375 | Cite as

The MHD properties of ambipolar diffusion and quasi—Ambipolar diffusion in a plasma column

  • Tang Fulin
  • Zhuo Kecong


In the present paper, based on the conservation law of mass and momentum for ion and electron, the distribution of velocity, density of ions and electrons along radial direction are solved numerically. Furthermore, the comparison between MHD properties of ambipolar and quasi-ambipolar diffusion is made. The numerical calculation is carried out for argon plasma. The results show that the ion density, ratio of ion and electron velocity at the cathode sheath boundary surface increase with the intensity of magnetic induction, meanwhile, the distance between sheaths decreases as well as the radial velocity of ion and electron at the anode sheath boundary. The ion density varies in accord with experiment qualitatively[1]. All parameters mentioned above are not sensitive to magnetic field in ambipolar diffusion.

Key Words

plasma column ambipolar diffusion quasi—ambipolar diffusion 


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Copyright information

© Chinese Society of Theoretical and Applied Mechanics 1989

Authors and Affiliations

  • Tang Fulin
    • 1
  • Zhuo Kecong
    • 1
  1. 1.Institute of MechanicsChinese Academy of SciencesChina

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