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
(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