Two-dimensional, hybrid model of low-pressure glow discharges

1994 ◽  
Vol 49 (6) ◽  
pp. 5607-5622 ◽  
Author(s):  
A. Fiala ◽  
L. C. Pitchford ◽  
J. P. Boeuf
Keyword(s):  
Hybrid Model ◽  
Low Pressure ◽  
Two Dimensional ◽  
Glow Discharges

Two-Dimensional Nonequilibrium Plasma Modeling Based on the Particle-Boltzmann Hybrid Model for RF Glow Discharges

1997 ◽  
Vol 36 (Part 1, No. 7B) ◽  
pp. 4789-4793
Author(s):  
Koji Satake ◽  
Toshiaki Monaka ◽  
Osamu Ukai ◽  
Yoshiaki Takeuchi ◽  
Masayoshi Murata
Keyword(s):  
Hybrid Model ◽  
Nonequilibrium Plasma ◽  
Two Dimensional ◽  
Plasma Modeling ◽  
Glow Discharges

Experimental investigations of glow discharges in hollow cathode geometries at low pressure

2005 ◽  
Vol 33 (2) ◽  
pp. 384-385 ◽  
Author(s):  
T. Callegari ◽  
F. Gegot ◽  
L.C. Pitchford ◽  
J. Galy ◽  
J.P. Boeuf
Keyword(s):  
Hollow Cathode ◽  
Low Pressure ◽  
Experimental Investigations ◽  
Glow Discharges

scholarly journals A self-consistent hybrid model of kinetic striations in low-current Argon discharges

2022 ◽  
Author(s):  
Vladimir Kolobov ◽  
Juan Alonso Guzmán ◽  
R R Arslanbekov
Keyword(s):  
Kinetic Equation ◽  
Hybrid Model ◽  
Noble Gases ◽  
Numerical Solutions ◽  
Penning Ionization ◽  
Poisson Solver ◽  
Glow Discharges ◽  
Self Consistent ◽  
Ionization Model ◽  
Positive Column Plasma

Abstract A self-consistent hybrid model of standing and moving striations was developed for low-current DC discharges in noble gases. We introduced the concept of surface diffusion in phase space (r,u) (where u denotes the electron kinetic energy) described by a tensor diffusion in the nonlocal Fokker-Planck kinetic equation for electrons in the collisional plasma. Electrons diffuse along surfaces of constant total energy ε=u-eφ(r) between energy jumps in inelastic collisions with atoms. Numerical solutions of the 1d1u kinetic equation for electrons were obtained by two methods and coupled to ion transport and Poisson solver. We studied the dynamics of striation formation in Townsend and glow discharges in Argon gas at low discharge currents using a two-level excitation-ionization model and a “full-chemistry” model, which includes stepwise and Penning ionization. Standing striations appeared in Townsend and glow discharges at low currents, and moving striations were obtained for the discharge currents exceeding a critical value. These waves originate at the anode and propagate towards the cathode. We have seen two types of moving striations with the 2-level and full-chemistry models, which resemble the s and p striations previously observed in the experiments. Simulations indicate that processes in the anode region could control moving striations in the positive column plasma. The developed model helps clarify the nature of standing and moving striations in DC discharges of noble gases at low discharge currents and low gas pressures.

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