Small multicusp H− source
- 1 March 1988
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 59 (3), 453-456
- https://doi.org/10.1063/1.1139859
Abstract
High‐quality H− beams have been generated from a multicusp source equipped with a permanent magnet filter. It is shown that a large improvement in H− yield can be achieved by employing a small multicusp source, fabricated with the proper wall material and extraction chamber length. From this small source, H− current densities higher than 250 mA/cm2 have been extracted from a 1‐mm‐diam aperture for a discharge voltage of 150 V and a discharge current of 450 A. When the source is operated with deuterium, the extractable negative ion current density is reduced by approximately 30%.Keywords
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