The role of fast electrons for the confinement of plasma by magnetic cusps
- 1 February 1984
- journal article
- Published by IOP Publishing in Plasma Physics and Controlled Fusion
- Vol. 26 (2) , 433-442
- https://doi.org/10.1088/0741-3335/26/2/004
Abstract
The influence of fast primary electrons on the leak width of a plasma in a picket fence or cusp geometry in the presence of a neutral gas background is discussed theoretically. Without primary electrons a leak width of the order of an ion Larmor radius (ai) is found, whereas with fast primary electrons a leak width of the order of a hybrid width (2 square root aiae) can be obtained. This is in agreement with experimental data in the literature.Keywords
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