NEGATIVE-ION PRODUCTION IN MULTICHARGED ION-SURFACE INTERACTIONS

IG HUGHES, J LIMBURG, R HOEKSTRA, R MORGENSTERN, S HUSTEDT, N NATKE, W HEILAND

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    Abstract

    Measurements are presented of energy and angular resolved reflected charge state distributions for O-q+, q=1-7, and N-q+, q=2-7, incident projectiles scattered from a clean Al(110) single crystal surface. The measurements were carried out at 16 keV incident ion energy, and at 1.2 degrees grazing incidence. O- reflected ions were observed for all incident O projectile charge states. The energy loss of O- reflected particles was found to be consistently larger than for reflected O+ particles, which was in turn larger than for higher reflected charge states. The magnitude of the energy loss was found to be independent of the incident projectile charge. The reflected charge state distributions were also found to be independent of the incident charge state, except when projectile K shell vacancies were initially present.

    Original languageEnglish
    Pages (from-to)458-461
    Number of pages4
    JournalNuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms
    Volume98
    Issue number1-4
    Publication statusPublished - May-1995
    Event7th International Conference on the Physics of Highly Charged Ions (HCI-94) - , Austria
    Duration: 19-Sep-199423-Sep-1994

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