H− ion density measurement in a tandem multicusp discharge
- 1 March 1984
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 55 (3) , 338-341
- https://doi.org/10.1063/1.1137762
Abstract
The H− ion density is measured by photodetachment in the source and target sections of a tandem multicusp discharge containing a ‘‘magnetic filter.’’ The results confirm previous observations based on the measurement of extracted currents, that a magnetic filter, together with a small positive bias on the plasma grid, produce a significant increase in the H− ion density and a reduction in the electron density in the target section.Keywords
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