Phys. Rev. Lett. 72, 3899–3902 (1994)Inner-shell electron promotion in low energy Li+-Al(100) collisionsReceived 7 February 1994; published in the issue dated 13 June 1994 A previously unobserved inelastic excitation mechanism is reported for alkali ions scattered from a metal surface. Li 1s holes are generated via electron promotion during hard binary collisions with surface Al atoms. Excited Li then resonantly neutralizes to form Li* (1s 2s2). These particles autoionize above the surface and are thus detected as ions. At large scattering angles, the majority of the singly scattered Li+ ions participate in this promotion process for incident energies of ∼3 keV and higher. © 1994 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.72.3899
DOI:
10.1103/PhysRevLett.72.3899
PACS:
79.20.Rf, 61.80.Mk
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