Band structure effects in the energy loss of low-energy protons and deuterons in thin films of Pt
- Celedón, C E.
- Sánchez, E. A.
- Salazar Alarcón, Leonardo
- Guimpel, Julio Juan
- Cortés, A.
- Vargas, P.
- Arista, Nestor Ricardo
DOIAbstract
We have investigated experimentally and by computer simulations the energy-loss and angular distribution of low energy (E<10 keV) protons and deuterons transmitted through thin polycrystalline platinum films. The experimental results show significant deviations from the expected velocity dependence of the stopping power in the range of very low energies with respect to the predictions of the Density Functional Theory for a jellium model. This behavior is similar to those observed in other transition metals such as Cu, Ag and Au, but different from the linear dependence recently observed in another transition metal, Pd, which belongs to the same Group of Pt in the Periodic Table. These differences are analyzed in term of the properties of th...
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