Impurity Evolution in a Beam-Heated Tokamak
- 1 February 1982
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 21 (2R)
- https://doi.org/10.1143/jjap.21.331
Abstract
Impurity evolution during neutral beam injection has been investigated in a large tokamak with the first wall made of low-Z (carbon), medium-Z (titanium) and high-Z (molybdenum), based on a simple model of wall-released impurity behavior. The use of low-Z material seems helpful in reducing impurity contamination in a high-temperature plasma with material limiters. A divertor is effective for controlling of wall-sputtered impurities for any of the wall materials.Keywords
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