Abstract:
We report calculations of the electron-impact ionization cross-sections of selected dimers (homonuclear diatomic molecules) and trimers (homonuclear triatomic molecules) using a method which relies only on macroscopic quantities in conjunction with a “defect concept”. The empirically determined defect describes the deviation of the cluster (dimer, trimer) cross-sections from a simple linear dependence on the cluster size. We compare the calculated cross-sections to experimental data for the dimers S2 and F2 and the trimer O3 and we present predictions for the ionization cross-sections of Br2, I2, C2 and C3 for which no experimental data are available. Lastly, we extend the method to the calculation of ionization cross-sections for the fullerenes C60 and C70.
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Received 6 December 1999 and Received in final form 10 April 2000
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Deutsch, H., Becker, K. & Märk, T. Calculation of absolute electron-impact ionization cross-sections of dimers and trimers. Eur. Phys. J. D 12, 283–287 (2000). https://doi.org/10.1007/s100530070023
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DOI: https://doi.org/10.1007/s100530070023