IRON ISOTOPE RATIO MEASUREMENTS BY NEGATIVE THERMAL IONISATION MASS SPECTROMETRY USING FEF4- MOLECULAR IONS

@inproceedings{Walczyk1997IRONIR,
  title={IRON ISOTOPE RATIO MEASUREMENTS BY NEGATIVE THERMAL IONISATION MASS SPECTROMETRY USING FEF4- MOLECULAR IONS},
  author={Thomas Walczyk},
  year={1997}
}
Abstract Based on the formation of molecular FeF 4 − ions under thermal ion source conditions, a negative thermal ionisation technique for iron was developed. Compared with the widely used iron isotopic analysis by positive thermal ionisation mass spectrometry, a better control of mass-dependent isotopic fractionation is possible by generating molecular FeF 4 − ions instead of an atomic Fe + ion beam at comparable ionisation efficiencies. In comparison with the positive thermal ionisation… CONTINUE READING

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