Revealing the non-s2 contributions in the momentum wave function of ground-state He

H. Schmidt-Böcking*, V. Mergel, R. Dörner, C. L. Cocke, O. Jagutzki, L. Schmidt, Th Weber, H. J. Lüdde, E. Weigold, J. Berakdar, H. Cederquist, H. T. Schmidt, R. Schuch, A. S. Kheifets

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    28 Citations (Scopus)

    Abstract

    The correlated Tunneling Transfer Ionization (TuTI) channel in fast 4-body processes p + He → H0 + He2+ +e is utilized to probe the highly correlated asymptotic parts of the He ground-state momentum space wave function. In this reaction, predominantly at large nuclear impact parameters, one electron in the He ground state is captured by the proton by tunneling through the two-center barrier when electron and proton velocity vectors resonantly match. The measured 3-particle final-state momentum distributions show characteristic features that we trace back to the highly correlated non-s2 components of the He ground-state momentum wave function. This conclusion is supported by a simple heuristic model.

    Original languageEnglish
    Pages (from-to)477-483
    Number of pages7
    JournalEurophysics Letters
    Volume62
    Issue number4
    DOIs
    Publication statusPublished - May 2003

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