Calculation of absolute electron-impact ionization cross-sections of dimers and trimers

H. Deutsch, K. Becker, T. D. Märk

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)283-287
Number of pages5
JournalEuropean Physical Journal D
Issue number2
StatePublished - Nov 2000

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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