2002
DOI: 10.1088/0022-3727/35/17/312
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Power balance and space-charge confinement in a neon dc column plasma

Abstract: The diffuse column of a dc glow discharge in neon is a typical example of a plasma whose properties are mainly determined by the non-local non-equilibrium kinetics of the electron component. Consequently, the space-charge confinement causes a spatial variation of all plasma properties. The effects on the power balance, the ionization budget and the radiation efficiency of a cylindrical column plasma are studied by a detailed self-consistent column model based on a hybrid method. The analysis deals with the… Show more

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Cited by 17 publications
(16 citation statements)
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References 20 publications
(52 reference statements)
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“…To derive the global power balance equation the spatially resolved power balance of heavy particles has to be considered together with the electron power balance. 22 Finally, the global power balance equation becomes the form…”
Section: B Global Power Balance Of the Discharge Plasmamentioning
confidence: 99%
“…To derive the global power balance equation the spatially resolved power balance of heavy particles has to be considered together with the electron power balance. 22 Finally, the global power balance equation becomes the form…”
Section: B Global Power Balance Of the Discharge Plasmamentioning
confidence: 99%
“…In general, this value is inversely proportional with the discharge tube radius. Therefore, at large radii, there is a net loss of electron near the axis leading to a decrease of the electron density and an increase in the electron temperature [20,21]. Hence, we have higher electron temperature at probe 3 than at probe 2.…”
Section: Resultsmentioning
confidence: 86%
“…The observed discrepancy between experimental and numerical radial profiles of electron temperature indicates that the assumption of parabolic distribution of plasma potential may be incorrect for the case of the lowpressure low-frequency ICP with a ferrite core. It is necessary to underline that the assumption was made for DC glow discharges with a tube diameter of a few centimeters [3], while the low-frequency ICP discharge chamber diameter is 23 centimeters.…”
Section: Resultsmentioning
confidence: 99%
“…For simplicity, the radial distribution of plasma potential W(r) is taken as a parabolic function of radius, with a wall potential of 12 V, near the threshold for metastables excitation. This assumption is used to describe the radial distribution of plasma potential in DC glow discharges [3].…”
Section: Numerical Modelmentioning
confidence: 99%