C. Cornelissen

Freie Universität Berlin, Berlín, Berlin, Germany

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Publications (2)0 Total impact

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    ABSTRACT: Various additivity rules and the Deutsch—Märk (DM) formalism have been used to calculate total absolute electron-impact cross-sections for single ionization of the CFx (x = 1–3) free radicals, the NFx (x = 1,2) free radicals and the NF3 molecule. A comparison is made with experimentally determined total single ionization cross-sections which have been obtained from recently measured absolute partial ionization cross-sections for the parent and dissociative ionization of these species. The overall best agreement between the measured and the calculated cross-sections in terms of the absolute values, the shapes and the cross-section ordering was obtained using a recently proposed “new” additivity rule. Common trends and tendencies in the ionization cross-sections within each class of targets, CFx and NFx, and between the two target families CFx and NFx are highlighted and a comparison will be made with the previously measured and calculated ionization cross-sections for the SiFx (x = 1–3) free radicals.
    International Journal of Mass Spectrometry and Ion Processes. 01/1994;
  • [Show abstract] [Hide abstract]
    ABSTRACT: Using the recently developed semiclassical DM approach we have calculated the absolute electron impact cross sections for single ionization of some selected molecular radicals (CHn=1-3 and SiFn=1-3) from threshold up to 80 eV. The present results confirm (i) a previously noted anomaly in the ordering of the SiFn cross sections (i.e. [sigma](SiF) & >; [sigma](SiF2) & >; [sigma](SiF3)) and (ii) the failure of the simple additivity rule in predicting this anomaly.
    International Journal of Mass Spectrometry and Ion Processes 11/1993; 129:43-48.

Publication Stats

14 Citations

Institutions

  • 1993–1994
    • Freie Universität Berlin
      • Institute of Theoretical Physics
      Berlín, Berlin, Germany