The role of fast electrons for the confinement of plasma by magnetic cusps
G Knorr; R L Merlino; G Knorr; Dept. of Phys. & Astron., Univ. of Iowa, Iowa City, IA, USA; R L Merlino; Dept. of Phys. & Astron., Univ. of Iowa, Iowa City, IA, USA
Журнал:
Plasma Physics and Controlled Fusion
Дата:
1984-02-01
Аннотация:
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 (a<sub>i</sub>) is found, whereas with fast primary electrons a leak width of the order of a hybrid width (2 square root a<sub>i</sub>a<sub>e</sub>) can be obtained. This is in agreement with experimental data in the literature.
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