scholarly journals ELECTRON ENERGY DISTRIBUTION, ELECTRIC FIELD AND TRANSPORT COEFFICIENTS IN THE FARADAY DARC SPACE

1979 ◽  
Vol 40 (C7) ◽  
pp. C7-191-C7-192
Author(s):  
E. Berger ◽  
A. Heisen
Keyword(s):  
Electric Field ◽  
Energy Distribution ◽  
Electron Energy ◽  
Transport Coefficients ◽  
Electron Energy Distribution

scholarly journals Studying the Electron Energy Distribution Function (EEDF) and Electron Transport Coefficients in SF6 – He Gas Mixtures by Solving the Boltzmann Equation

2017 ◽  
Vol 14 (2) ◽  
pp. 411-417
Author(s):  
Baghdad Science Journal
Keyword(s):  
Distribution Function ◽  
Boltzmann Equation ◽  
Energy Distribution ◽  
Electron Energy ◽  
Electron Energy Distribution Function ◽  
Sulfur Hexafluoride ◽  
Transport Coefficients ◽  
Energy Distribution Function ◽  
Electron Energy Distribution ◽  
The Boltzmann Equation

The Boltzmann equation has been solved using (EEDF) package for a pure sulfur hexafluoride (SF6) gas and its mixtures with buffer Helium (He) gas to study the electron energy distribution function EEDF and then the corresponding transport coefficients for various ratios of SF6 and the mixtures. The calculations are graphically represented and discussed for the sake of comparison between the various mixtures. It is found that the various SF6 – He content mixtures have a considerable effect on EEDF and the transport coefficients of the mixtures

scholarly journals A Computationally Assisted Ar I Emission Line Ratio Technique to Infer Electron Energy Distribution and Determine Other Plasma Parameters in Pulsed Low-Temperature Plasma

Plasma ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 65-76 ◽  
Author(s):  
James Franek ◽  
Samuel Nogami ◽  
Mark Koepke ◽  
Vladimir Demidov ◽  
Edward Barnat
Keyword(s):  
Electric Field ◽  
Energy Distribution ◽  
Emission Line ◽  
Electron Density ◽  
Electron Energy ◽  
Metastable Atom ◽  
Line Ratio ◽  
Electron Energy Distribution ◽  
Atom Density ◽  
Argon Discharge

In the post-transient stage of a 1-Torr pulsed argon discharge, a computationally assisted diagnostic technique is demonstrated for either inferring the electron energy distribution function (EEDF) if the metastable-atom density is known (i.e., measured) or quantitatively determining the metastable-atom density if the EEDF is known. This technique, which can be extended to be applicable to the initial and transient stages of the discharge, is based on the sensitivity of both emission line ratio values to metastable-atom density, on the EEDF, and on correlating the measurements of metastable-atom density, electron density, reduced electric field, and the ratio of emission line pairs (420.1–419.8 nm or 420.1–425.9 nm) for a given expression of the EEDF, as evidenced by the quantitative agreement between the observed emission line ratio and the predicted emission line ratio. Temporal measurement of electron density, metastable-atom density, and reduced electric field are then used to infer the transient behavior of the excitation rates describing electron-atom collision-induced excitation in the pulsed positive column. The changing nature of the EEDF, as it starts off being Druyvesteyn and becomes more Maxwellian later with the increasing electron density, is key to interpreting the correlation and explaining the temporal behavior of the emission line ratio in all stages of the discharge. Similar inferences of electron density and reduced electric field based on readily available diagnostic signatures may also be afforded by this model.

scholarly journals NUMERICAL CALCULATIONS OF THE ELECTRON ENERGY DISTRIBUTION FUNCTION IN (50% SF6 - 50 % Xe) MIXTURE WITH CORRESPONDING TRANSPORT PARAMETERS

2019 ◽  
Vol 7 (3) ◽  
pp. 97-104
Author(s):  
Firas Mahmood Hady
Keyword(s):  
Distribution Function ◽  
Energy Distribution ◽  
Electron Energy ◽  
Electron Energy Distribution Function ◽  
Transport Coefficients ◽  
Energy Distribution Function ◽  
Electron Energy Distribution ◽  
Transport Parameters ◽  
Characteristic Energy ◽  
Electron Diffusion Coefficient

We used EEDF software package program to solve Boltzmann equation to calculate the electron energy distribution function in (50% SF6 – 50% Xe) mixture. The calculations are achieved under a steady state electric field using the classical two - term approximation. The electron energy distribution function (EEDF) and the corresponding transport coefficients (mean electron energy, characteristic energy, mobility of electron, diffusion coefficient, and drift velocity) for constant and various electron concentrations are calculated and graphically represented.  It is found that variations of electron concentration have a significant effect on transport coefficients of the mixture. The work is in a well agreement with previously experimental and computational researches.

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