Probability of absorption/implantation of low-energy H+2 ions in O-covered vanadium
2007
Abstract Energy dependence of the absorption/implantation probability, α ab , of H 2 + ions in vanadium covered by an oxygen monolayer was studied in the range 0.5–300 eV by plasma-membrane techniques. In contrast to what one would expect in the case of a clean surface, α ab was found: (1) to be appreciably smaller than 1 ( α ab ≈ 0.2) at the lowest energies, and (2) to monotonically increase with ion energy, with a particularly steep rise in the range 0.5 to ∼7 eV – just where α ab is expected to sharply decrease at a clean surface.
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