Beam induced inelastic processes at surfaces
- Vanderbilt Univ., Nashville, TN (United States)
Recent studies of the fundamental dynamics of low-energy ion-beam interactions with surfaces will be discussed. Emphasis will be on the ways in which the energy deposited by incident heavy particles is partitioned and localized resulting in bond-breaking and bond-making processes, exciton and defect creation, luminescence, charge separation, and materials modification. Three active research topics will be treated: (1) Low-energy (2 to 2000 eV) oxygen and nitrogen bombardment of metal and insulator surfaces leading to erosion and glow, (2) Grazing incidence and tilted foil ion-surface neutralization processes which elucidate quantum mechanical phase interfence effects and the dependence of electron exchange processes at surfaces on surface electronic structure, and (3) Ion-beam bombardment induced electronic defect creation in insulators. The crucial role of the electronic structure of the substrate as modified by the presence of overlayers (in particular, hydrogen bearing overlayers) in these processes will be highlighted.
- OSTI ID:
- 199615
- Report Number(s):
- CONF-941129--; CNN: Contract N00014-91-C-0109; Grant N00014-91-J-4040
- Country of Publication:
- United States
- Language:
- English
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