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- W1991553910 abstract "The elastic scattering of 30–300 eV positrons differs significantly from electrons, i.e., a lack of an exchange interaction and ion core repulsion, instead of attraction. Inelastic scattering also differs because there are no final scattering states for the positron which are excluded by the Pauli principle, thus resulting in a shorter positron elastic mean free path. The resulting advantages of LEPD over LEED will be discussed. When a positron is implanted and thermalizes in a solid, many possible fates occur which differs from electrons. The dominant processes for positrons occurring as a metallic surface are (i) localization in a surface state, (ii) direct reemission from the metal into the vacuum in those systems which exhibit a negative positron work function; during this reemission process the positrons can loose energy by exciting molecular vibrations, and (iii) reemission into the vacuum with an electron, thus forming positronium." @default.
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- W1991553910 date "1984-04-01" @default.
- W1991553910 modified "2023-09-23" @default.
- W1991553910 title "Differences between positrons and electrons in elastic and inelastic processes at surfaces" @default.
- W1991553910 doi "https://doi.org/10.1116/1.572548" @default.
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