Measurement of the energy distribution of a gallium liquid metal ion source
- 1 July 1980
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 51 (7), 3453-3455
- https://doi.org/10.1063/1.328197
Abstract
Total energy distribution (TED) curves of ions emitted from a gallium liquid metal ion source exhibit full width at half maximum (FWHM) value that increases from 5 to 30 eV with an increasing total current of 1–30 μA. An energy deficit of 4 eV at threshold supports a field evaporation mechanism of ion formation. The lowest TED FWHM value of 5 eV corresponds to a source angular brightness of 20 μA/sr.Keywords
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