Electron-impact single ionization cross sections for Si7+. Uncertainties are one-standard-deviation relative only; absolute uncertainties range from 9% to 12% for the peak cross section at a 90%-confidence level. Reference: P. A. Zeijlmans van Emmichoven et al., Phys. Rev. A 47, 2888 (1993).

      Energy      Cross Section
        (eV)       (10-18 cm2)
        200       0.019 ± 0.072
        249      -0.009 ± 0.115
        298       0.004 ± 0.047
        323       0.127 ± 0.046
        347       0.298 ± 0.033
        372       0.355 ± 0.044
        386       0.397 ± 0.065
        396       0.500 ± 0.036
        421       0.552 ± 0.045
        445       0.662 ± 0.040
        470       0.642 ± 0.037
        494       0.756 ± 0.059
        519       0.781 ± 0.067
        544       0.826 ± 0.041
        593       0.860 ± 0.067
        642       0.877 ± 0.040
        740       0.917 ± 0.055
        789       0.878 ± 0.069
        888       0.952 ± 0.056
        986       0.890 ± 0.064
       1182       0.821 ± 0.057
       1363       0.812 ± 0.056


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Last Modified: Friday, January 10, 1997