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Treatment of edge beams in a focusing self-magnetically Bθ-insulated ion diode

Published online by Cambridge University Press:  09 March 2009

Thomas Westermann  and
Walter Bauer
Thomas Westermann
Affiliation:
Kernforschungszentrum Karlsruhe GmbH Hauptabteilung f¨r Daten- und Informationsverarbeitung
Walter Bauer
Affiliation:
Kernforschungszentrum Karlsruhe GmbH lnstitut f¨r Neutronenphysik und Reaktortechnik, Postfach 3640, 7500 Karlsruhe, Federal Republic of Germany
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Abstract

When focusing light ions with intense light ion-beam diodes, problems occur with ions emitted at the edge of the anode plasma. Numerical studies investigating this well-known experimental observation are presented. Going beyond the computational simulations introduced by Westermann (1991 Appl. Phys. Lett. 58, 696), two suggestions for the case of the self-magnetically Bθ-insulated ion diode are presented to focus the beamlets emitted from outer parts of the anode. The first one is based upon the idea of changing nonemitting parts of the anode surface and the second one of shifting the emitting anode surface into the anode body.

Type
Research Article
Information
Laser and Particle Beams , Volume 10 , Issue 3 , September 1992 , pp. 539 - 547
Copyright
Copyright © Cambridge University Press 1992

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References

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