Multicusp negative ion source

descriptionPublicationkeyboard_double_arrow_right Article 01 Jun 1980 English Publisher:AIP PublishingJournal:Review of Scientific Instruments, volume 51, pages 721-727 (issn: 0034-6748, eissn: 1089-7623,

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Authors: K. W. Ehlers; K. N. Leung;

doi: 10.1063/1.1136302

Multicusp negative ion source

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Abstract

The characteristics of a steady state, surface conversion, multiline-cusp negative ion source have been investigated for the production of high-energy neutral beams. With the presence of cesium, this source has been operated at a neutral pressure of 1×10−3 Torr to generate a H− ion current greater than 400 mA. The percentage of impurities in the self-extracted negative ion beam has been analyzed by a mass spectrometer. A technique for reducing the background electron density at the source exit is also presented.

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University of California, Berkeley
United States

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