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Chin. Phys., 2001, Vol. 10(7): 639-644    DOI: 10.1088/1009-1963/10/7/011
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES Prev   Next  

ELECTRON TRANSPORT BEHAVIOURS IN THE NITROGEN DIRECT CURRENT GLOW DISCHARGE

Zhang Lian-zhu, Yu Wei, Wang Jiu-li, Han Li, Fu Guang-sheng
Department of Physics, Hebei University, Baoding 071002, China
Abstract  A Monte Carlo simulation is presented to describe the electron transport behaviours in the nitrogen direct current glow discharge. The energy and angular distributions of the electrons at different positions of the cathode dark space are calculated; their energy and density distribution features throughout the entire discharge are discussed. The influence of molecular vibrational excitation, typical for electron-molecule collisions, has been studied and the elementary process of active species generation has been illustrated. The simulated results reveal that, in the cathode dark space, the high-energy electrons are mainly forward scattering and behave as a high-energy ‘electron beam'. The sharp increase of the number of secondary electrons plays an important role in producing active species at the interface between the cathode dark space and the negative glow region. The vibrational excitation enhances the energy loss of electrons in the negative glow region.
Keywords:  Monte Carlo simulation      nitrogen direct current glow discharge      mechanism of active species generation  
Received:  19 August 2000      Revised:  02 March 2001      Published:  12 June 2005
PACS:  52.80.Hc (Glow; corona)  
  52.65.Pp (Monte Carlo methods)  
  52.20.Hv (Atomic, molecular, ion, and heavy-particle collisions)  
  34.50.Ez (Rotational and vibrational energy transfer)  
  34.80.Gs (Molecular excitation and ionization)  
Fund: Project supported by the Natural Science Foundation of Hebei Province, China (Grant No. 597058).

Cite this article: 

Zhang Lian-zhu, Yu Wei, Wang Jiu-li, Han Li, Fu Guang-sheng ELECTRON TRANSPORT BEHAVIOURS IN THE NITROGEN DIRECT CURRENT GLOW DISCHARGE 2001 Chin. Phys. 10 639

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