Drift Mechanism of Scrape-Off Layer Formation in a Tokamak

The tokamak scrape-off layer (SOL) model is discussed on the assumption of drift mechanisms of electron heat transport and dominant role of recycling outside the separatrix comparing to the ion outflow from the core. The SOL width estimate is given. It is shown that drift mechanisms give minimal SOL...

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Bibliographic Details
Published in:Technical physics letters 2018-03, Vol.44 (3), p.235-238
Main Authors: Kaveeva, E. G., Rozhansky, V. A.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Classical and Continuum Physics
Drift
ELECTRONS
HEAT TRANSFER
Outflow
Physics
Physics and Astronomy
PLASMA SCRAPE-OFF LAYER
RECYCLING
TOKAMAK DEVICES
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Summary:The tokamak scrape-off layer (SOL) model is discussed on the assumption of drift mechanisms of electron heat transport and dominant role of recycling outside the separatrix comparing to the ion outflow from the core. The SOL width estimate is given. It is shown that drift mechanisms give minimal SOL width corresponding to present day scalings which is close by the order of magnitude to the experimental values.
ISSN:1063-7850
1090-6533
DOI:10.1134/S1063785018030203