Surface effects in the energy loss of ions passing through a thin foil

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.56.2032· OSTI ID:538511

Osma, J ^[1]; Garcia de Abajo, F J ^[2]

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1. Departamento de Fisica de Materiales, Facultad de Ciencias Quimicas, Universidad del Pais Vasco/Euskal Herriko Unibertsitatea, Apartado 1072, 20080, San Sebastian (Spain)
2. Departamento de Ciencias de la Computacion e Inteligencia Artificial, Facultad de Informatica, Universidad del Pais Vasco/Euskal Herriko Unibertsitatea, Apartado 649, 20080, San Sebastian (Spain)

The role of surface plasmon excitation in the interaction of ions passing through thin films has been studied in both the Bloch hydrodynamic approximation and the local response approach for projectile velocities above the maximum of the stopping power curve. The effect of the surface is found to be much weaker when the dispersion of the modes is taken into consideration than in the case of nondispersive media, though qualitatively the main features of the hydrodynamic approach resemble those of the local one. A generalization of the Bothe-Landau convolution formula for the loss probability distribution is derived to take into account the scattering due to the surface. The effects of the surface in the energy-loss spectra are discussed. A comparison with experiment is given. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 538511
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 3 Vol. 56; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ENERGY LOSSES
EXCITATION
HYDRODYNAMICS
ION COLLISIONS
PLASMONS
THIN FILMS