Doubly-charged ions from liquid metal ion sources: direct field-evaporation or post-ionization

Mair, Greame L. R.; Ganetsos, Theodore; Bischoff, Lothar; Teichert, Jochen

Doubly-charged ions from liquid metal ion sources: direct field-evaporation or post-ionization

Mair, G. L. R.; Ganetsos, T.; Bischoff, L.; Teichert, J.

We investigate the temperature dependence of the mass spectrum of the ion beam emitted by an Au77Ge14Si9 liquid metal alloy ion source. Our results strongly point towards the co-existance of two mechanisms for the emission of doubly-charged monomer ions: direct field evaporation and post-ionization.

Keywords: liquid metal alloy ion source; mass spectra; emission mechanism; field evaporation post-ionization

Journal of Physics D: Applied Physics; 33 (2000) L86 - L89

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