Resonant vibrational excitation of CH3X (X = F, Cl, Br and I) by low-energy electron impact

H Kato, M Hoshino, Yasuyoshi Nagai, T Tanaka, Michael Brunger, O Ingolfsson, H Tanaka

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)

    Abstract

    Differential cross sections (DCSs) for excitation of the C-H stretch vibrations for CH 3 F, CH 3 Cl, CH 3 Br and CH 3 I were measured by electron impact. Resonance enhancement was observed for the C-H stretch at 6.6, 5.9, 5.5 and 4.7 eV respectively. For CH 3 F this is attributed to a 2 A 1 shape resonance formed through temporary occupation of the LUMO and for the heavier halogens to a 2 E shape resonance formed through temporary occupation of the LUMO+1. DCSs for excitation of the C-X stretch were also measured for CH 3 F and CH 3 Cl. The shift in the resonance energy is discussed in context to the substitution effect of the halogens.

    Original languageEnglish
    Article number065205
    Pages (from-to)065205-1-065205-6
    Number of pages6
    JournalJournal of Physics B-Atomic Molecular and Optical Physics
    Volume43
    Issue number6
    DOIs
    Publication statusPublished - 2010

    Fingerprint Dive into the research topics of 'Resonant vibrational excitation of CH3X (X = F, Cl, Br and I) by low-energy electron impact'. Together they form a unique fingerprint.

    Cite this