Journal
PHYSICAL REVIEW LETTERS
Volume 84, Issue 10, Pages 2124-2127Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.2124
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The energy loss of slow ions during grazing scattering from a LiF(100) surface as a function of the projectile atomic number Z(1) is observed to show oscillations similar to those occurring in metals. A model of stopping of ions in an electron gas where screening is calculated from density functional theory reproduces well the experimental data. The same model gives good agreement with the energy loss obtained in transmission experiments performed with H and He projectiles. Analysis of these results allows us to gain new insights in the stopping of slow ions in ionic crystals.
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