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|Charged-particle interaction with liquids: Ripplon excitations
|Barberán Falcón, Núria
Garcia Molina, Rafael
Gras Martí, Alberto
|Física de l'estat sòlid
Solid state physics
|The American Physical Society
|We calculate the ripplon field contribution to the self-energy of an electron exterior to a liquid for planar and spherical geometries. We compare the full dielectric calculation of the electron-liquid interaction with the simpler alternative method consisting of integrating the electron-atom static-induced-dipolar potential through the whole liquid volume. We obtain good agreement between both methods for a nonpolar liquid such as 4He but differences up to 40% for a polar liquid such as water. We study the conditions under which the ripplon contribution to the self-energy is a perturbation. For an electron moving parallel to a planar liquid surface, we calculate the ripplon contribution to its stopping power. For this dynamical case, we conclude that the alternative method is a good approximation even for polar liquids.
|Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.40.10
|It is part of:
|Physical Review B, 1989, vol. 40, núm. 1, p. 10-19.
|Appears in Collections:
|Articles publicats en revistes (Física Quàntica i Astrofísica)
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