Title:
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Charged-particle interaction with liquids: Ripplon excitations
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Author:
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Barberán Falcón, Núria; Garcia Molina, Rafael; Gras Martí, Alberto
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Other authors:
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Universitat de Barcelona |
Abstract:
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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. |
Subject(s):
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-Física de l'estat sòlid -Teoria quàntica -Solid state physics -Quantum theory |
Rights:
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(c) The American Physical Society, 1989
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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