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Acta Phys. Sin. (Overseas Edition), 1996, Vol. 5(2): 100-112    DOI: 10.1088/1004-423X/5/2/003
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES Prev   Next  

ELECTRON TRANSPORT BEHAVIOR IN NORMAL AND ABNORMAL DIRECT CURRENT DISCHARGE CATHODE SHEATH

WEI HE-LINa, LIU ZU-LIa, LIU DA-MIANGa, LI ZAI-GUANGb, LU DONG-SHENGb
a Department of Physics, Huazhong University of Science and Technology, Wuhan 4300074, China; b Stale Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China
Abstract  This paper studies the electron transport behavior in normal and abnormal helium direct current (dc) glow discharges using a Monte Carlo simulation, in which the influences of the electron initial energy and cathode surface reflection on the electron swarm behavior are considered. The electron-neutral atom collision processes and the electron swarm parameters (such as the number of collisions, collision rates, ionization coefficient, mean drift velocity, electron density, etc.) are analyzed. The results show that the variations of the initial energy of the electron emitted from the cathode and the cathode reflection cause a weak effect on the electron transport parameters in the two discharges. The results also indicate that the electron transport parameters are quite different in normal and abnormal discharges.
Received:  27 December 1994      Published:  20 February 1996
PACS:  52.25.Fi (Transport properties)  
  52.40.Hf (Plasma-material interactions; boundary layer effects)  
  52.80.Hc (Glow; corona)  
  52.65.Pp (Monte Carlo methods)  
  52.20.Fs (Electron collisions)  
  52.20.Hv (Atomic, molecular, ion, and heavy-particle collisions)  
Fund: Project supported by the National Natural Science Foundation of China.

Cite this article: 

WEI HE-LIN, LIU ZU-LI, LIU DA-MIANG, LI ZAI-GUANG, LU DONG-SHENG ELECTRON TRANSPORT BEHAVIOR IN NORMAL AND ABNORMAL DIRECT CURRENT DISCHARGE CATHODE SHEATH 1996 Acta Phys. Sin. (Overseas Edition) 5 100

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