Auger Neutralization of Slow Protons at Solid Surfaces

S. Horiguchi, K. Koyama, Y. H. Ohtsuki

    Research output: Contribution to journalArticle

    35 Citations (Scopus)

    Abstract

    Auger neutralization of slow protons (⪅ a few keV) scattered from solid surfaces is considered. The neutralïzation probability per unit time P(s) is calculated as a function of the proton distance s from the surface to P(s) = A{e−2xs + (Bs + C) e −(x+a 0 −1)s + (Ds2 + Es + F) e −2a 0 −1s}, where a0 is the Bohr radius and A, B, C, D, E, F, and x proper constants depending on the target. At large distances from the surface, the second and third terms of P(s) can be neglected. As the proton approaches the surface, however, P(s) deviates from the simple exponential dependence of s. The neutral fraction φ0 is also calculated. From the obtained φ0, it is shown that Auger neutralization is important, at least in the low energy region.

    Original languageEnglish
    Pages (from-to)757-763
    Number of pages7
    JournalPhysica Status Solidi (B): Basic Research
    Volume87
    Issue number2
    DOIs
    Publication statusPublished - 1978

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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