State-selective electron capture in collisions of He2+ with H

R Hoekstra *, F.J de Heer, R Morgenstern

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

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    Abstract

    Charge transfer into He+ (nl) states (n <5) in collisions (2-13 keV amu-1) of He2+ on atomic hydrogen has been studied by means of photon emission spectroscopy. State selective electron capture cross sections into the degenerate He+ (4l) states have been determined by deconvoluting the intensity distribution of the He II (n = 4 --> n = 3) emission along the total ion-beam path inside the collision chamber. They are compared with theoretical results, especially with the large-basis set extended atomic orbital calculations of Fritsch. Generally good agreement with these extended calculations is found. However, the structures in the theoretical cross sections for capture into the non-dominantly populated n = 4 states are not observed experimentally.

    Original languageEnglish
    Pages (from-to)4025-4048
    Number of pages24
    JournalJournal of Physics B-Atomic Molecular and Optical Physics
    Volume24
    Issue number18
    DOIs
    Publication statusPublished - 28-Sep-1991

    Keywords

    • EXCHANGE RECOMBINATION SPECTROSCOPY
    • TRANSFER CROSS-SECTIONS
    • CHARGE-EXCHANGE
    • MOLECULAR-STATE
    • ATOMIC-HYDROGEN
    • EXCITED-STATES
    • ENERGY-RANGE
    • ION-SOURCE
    • HE2+ IONS
    • HE+

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