How to Patch Active Plasma and Collisionless Sheath: Practical Guide

Kaganovich, Igor D.

Princeton University. Plasma Physics Laboratory.

关键词: Plasma Sheath Computer Simulation;    70 Plasma Physics And Fusion Technology;    Bohm Criterion;    Boundary Conditions;    Computer Simulation;   

DOI  :  10.2172/809821
RP-ID  :  PPPL-3741
RP-ID  :  AC02-76CH03073
RP-ID  :  809821

美国|英语

来源: UNT Digital Library

【 摘 要 】

Most plasmas have a very thin sheath compared with the plasma dimension. This necessitates separate calculations of the plasma and sheath. The Bohm criterion provides the boundary condition for calculation of plasma profiles. To calculate sheath properties, a value of electric field at the plasma-sheath interface has to be specified in addition to the Bohm criterion. The value of the boundary electric field and robust procedure to approximately patch plasma and collisionless sheath with a very good accuracy are reported.