Comparison of experimental and theoretical electron-impact-ionization triple-differential cross sections for ethane

Esam Ali, Kate Nixon, Andrew Murray, Chuangang Ning, James Colgan, Don Madison

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We have recently examined electron-impact ionization of molecules that have one large atom at the center, surrounded by H nuclei (H2O, NH3, CH4). All of these molecules have ten electrons; however, they vary in their molecular symmetry. We found that the triple-differential cross sections (TDCSs) for the highest occupied molecular orbitals (HOMOs) were similar, as was the character of the HOMO orbitals which had a p-type “peanut” shape. In this work, we examine ethane (C2H6) which is a molecule that has two large atoms surrounded by H nuclei, so that its HOMO has a double-peanut shape. The experiment was performed using a coplanar symmetric geometry (equal final-state energies and angles). We find the TDCS for ethane is similar to the single-center molecules at higher energies, and is similar to a diatomic molecule at lower energies.
    Original languageEnglish
    Pages (from-to)042711-1-042711-6
    JournalPhysical Review A (Atomic, Molecular and Optical Physics)
    Volume92
    DOIs
    Publication statusPublished - 30 Oct 2015

    Keywords

    • (e,2e), TDCS, Ethane

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