Self-Consistent Description of Radial Space-Charge Confinement in DC Column Plasmas

✍ Scribed by M. Schmidt; D. Uhrlandt; R. Winkler

• Book ID: 102587500
• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 156 KB
• Volume: 168
• Category: Article
• ISSN: 0021-9991
• DOI: 10.1006/jcph.2000.6676

✦ Synopsis

A new method for the self-consistent description of radial space-charge confinement and the corresponding nonlocal kinetics of plasma components in the cylindrical dc column plasma is presented. The method comprises the solution of the spacedependent kinetic equation of the electron component, the fluid equations of ions and excited neutral particles and Poisson's equation. The nonlinearly coupled equations are solved self-consistently applying a nonlinear optimization technique, which is used to optimize a polynomial representation of the radial space-charge potential. The applicability of several optimization methods and their suitability concerning the convergence and accuracy are discussed. Examples of the self-consistent description are presented.