Theoretical and experimental study of space charge in intense ion beams
- 1 January 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 19 (1), 389-407
- https://doi.org/10.1103/physreva.19.389
Abstract
The highly collimated beams of energetic neutral atoms used in controlled thermonuclear fusion research (CTR) require the virtual elimination of space-charge forces in the primary ion beam in order to minimize the angular divergence. A model is presented which describes the behavior of an intense ion beam passing through a gas cell. This theory is used to derive the space-charge field produced by such a beam and shows how its effect can be minimized. This model agrees well with experimental measurements and enables emittance-dominated beams of very high brightness to be obtained which could find applications in fields other than CTR.Keywords
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