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Modeling of neutral plasma in a divertor in the fluid‐kinetic transition
Author(s) -
Karney C. F. F.,
Stotler D. P.,
Braams B. J.
Publication year - 1998
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.2150380148
Subject(s) - divertor , tokamak , plasma , kinetic energy , mean free path , front (military) , physics , coupling (piping) , ionization , atomic physics , mechanics , materials science , nuclear physics , classical mechanics , ion , electron , quantum mechanics , meteorology , metallurgy
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.