A compact low energy proton source
Open Access
- 1 October 2023
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 94 (10)
Abstract
A low energy proton source for non-neutral plasma experiments was developed. Electrons from a hot filament ionize H2 gas inside a geometrically compensated Penning trap to produce protons via dissociative ionization. A rotating wall electric field destabilizes the unwanted H2+ and H3+ generated in the process while concentrating protons at the center of the trap. The source produces bunches of protons with relatively low ion contamination (5.5% H2+ and 15.5% H3+), with energy tunable from 35 to 300 eV.Keywords
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Funding Information
- Austrian Science Fund (P32468, W1252-N27)
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