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Author Pai, S. T. ♦ Guo, X. M. ♦ Zhou, T. D.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION ♦ GLOW DISCHARGES ♦ ANALYTICAL SOLUTION ♦ ELECTRIC DISCHARGES ♦ ELECTRON DENSITY ♦ COLLISIONAL PLASMA ♦ IONIZED GASES ♦ ION DENSITY ♦ PLASMA PRODUCTION
Abstract On the basis of an analytic model developed previously [S. T. Pai, J. Appl. Phys. {bold 71}, 5820 (1992)], an improved version of the model for the description of dc glow discharge plasma was successfully developed. A set of closed form solutions was obtained from the governing equations. The two-dimensional, analytic solutions are functional and completely satisfy the governing equations, the actual boundary conditions, and Maxwell equations. They can be readily used to carry out numerical calculations without the necessity of employing any assumed boundary conditions. Results obtained from the model reveal that as the discharge gap spacing or pressure increases the maximum value in the electron density distribution moves toward the cathode. At a sufficiently large value of gap spacing, the positive column phenomenon begins to appear in the discharge region. The model has the capability of treating the positive column and negative glow as a continuous system without the necessity of studying them separately. The model also predicts a sharp rise of the positive ion density near the cathode and field reversal in the anode region. Variation of the electrode radius produces little effect on the axial spatial distribution of physical quantities studied. {copyright} {ital 1996 American Institute of Physics.}
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-10-01
Publisher Place United States
Journal Physics of Plasmas
Volume Number 3
Issue Number 10


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