Ambipolar diffusion in direct-current positive column with variations in radius of discharge tube

Akbar D., Bilikmen S.

CHINESE PHYSICS LETTERS, cilt.23, ss.2498-2501, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 23 Konu: 9
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1088/0256-307x/23/9/041
  • Sayfa Sayıları: ss.2498-2501


The ambipolar diffusion and argon ion mobility as functions of the reduced electric field and pressure times the tube radius are investigated in a weakly ionized non-uniform glow discharge plasma system. In particular, the variable cross section at the same discharge tube on the ambipolar diffusion coefficient shows a more noticeable effect than the effects from the ion mobility. As the diffusion length Lambda increases, the ambipolar diffusion D-a increases. However, it decreases as the discharge current is increased.