Binary contribution to the stopping in fast ion-surface collisions

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The mechanism of the binary collision with the free-electron gas in the proximity of a surface is investigated by employing a semiclassical formalism. The surface dynamic screening of the projectile is described with two well-known models commonly used in the literature: the parallel-dispersion (PD)...

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Autores principales: Gravielle, M.S., Arbó, D.G., Miraglia, J.E.
Formato: JOUR
Materias:
Dielectric properties
Energy dissipation
Protons
Surface phenomena
Binary collisions
Electron gas
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0168583X_v182_n1-4_p29_Gravielle
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_0168583X_v182_n1-4_p29_Gravielle
record_format dspace
spelling todo:paper_0168583X_v182_n1-4_p29_Gravielle2023-10-03T15:06:23Z Binary contribution to the stopping in fast ion-surface collisions Gravielle, M.S. Arbó, D.G. Miraglia, J.E. Dielectric properties Energy dissipation Protons Surface phenomena Binary collisions Electron gas The mechanism of the binary collision with the free-electron gas in the proximity of a surface is investigated by employing a semiclassical formalism. The surface dynamic screening of the projectile is described with two well-known models commonly used in the literature: the parallel-dispersion (PD) and specular-reflection (SR) models. The Mermin-Lindhard dielectric function is used to represent the dielectric response of the bulk material. The formalism is applied to the calculation of the energy loss by fast protons colliding with an aluminum surface. Results are compared with those obtained with the dielectric formalism, and energy-loss distributions are analyzed. It is concluded that the models used to describe the dynamic screening potential do not seem to give a reliable description of the binary mechanism. © 2001 Elsevier Science B.V. All rights reserved. Fil:Gravielle, M.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Arbó, D.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Miraglia, J.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0168583X_v182_n1-4_p29_Gravielle
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Dielectric properties
Energy dissipation
Protons
Surface phenomena
Binary collisions
Electron gas
spellingShingle Dielectric properties
Energy dissipation
Protons
Surface phenomena
Binary collisions
Electron gas
Gravielle, M.S.
Arbó, D.G.
Miraglia, J.E.
Binary contribution to the stopping in fast ion-surface collisions
topic_facet Dielectric properties
Energy dissipation
Protons
Surface phenomena
Binary collisions
Electron gas
description The mechanism of the binary collision with the free-electron gas in the proximity of a surface is investigated by employing a semiclassical formalism. The surface dynamic screening of the projectile is described with two well-known models commonly used in the literature: the parallel-dispersion (PD) and specular-reflection (SR) models. The Mermin-Lindhard dielectric function is used to represent the dielectric response of the bulk material. The formalism is applied to the calculation of the energy loss by fast protons colliding with an aluminum surface. Results are compared with those obtained with the dielectric formalism, and energy-loss distributions are analyzed. It is concluded that the models used to describe the dynamic screening potential do not seem to give a reliable description of the binary mechanism. © 2001 Elsevier Science B.V. All rights reserved.
format JOUR
author Gravielle, M.S.
Arbó, D.G.
Miraglia, J.E.
author_facet Gravielle, M.S.
Arbó, D.G.
Miraglia, J.E.
author_sort Gravielle, M.S.
title Binary contribution to the stopping in fast ion-surface collisions
title_short Binary contribution to the stopping in fast ion-surface collisions
title_full Binary contribution to the stopping in fast ion-surface collisions
title_fullStr Binary contribution to the stopping in fast ion-surface collisions
title_full_unstemmed Binary contribution to the stopping in fast ion-surface collisions
title_sort binary contribution to the stopping in fast ion-surface collisions
url http://hdl.handle.net/20.500.12110/paper_0168583X_v182_n1-4_p29_Gravielle
work_keys_str_mv AT graviellems binarycontributiontothestoppinginfastionsurfacecollisions
AT arbodg binarycontributiontothestoppinginfastionsurfacecollisions
AT miragliaje binarycontributiontothestoppinginfastionsurfacecollisions
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