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Modeling of neutral plasma in a divertor in the fluid-kinetic transition

✍ Scribed by C. F. F. Karney; D. P. Stotler; B. J. Braams

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
270 KB
Volume
38
Category
Article
ISSN
0005-8025

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✦ Synopsis

The neutrals in a tokamak divertor in the so-called "detached" mode of operation may be in a kinetic regime (long mean free path) in some regions and in a fluid regime (short mean free path) elsewhere. For example, a kinetic description is necessary in the thin ionization front, while the cold neutrals in front of the divertor plate are adequately described by fluid equations. The paper describes a way to model this by coupling existing Monte Carlo neutral transport and plasma fluid codes. This is explored with a simple analytical model. 'This work is supported by the U.S. Department of Energy under Contract Nos. DE-AC02-76-CHO-3073 a d DEFG02-86ER53223

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