Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interaction

Autores
García, Evelina Andrea; Romero, Marcelo Ariel; González, C.; Goldberg, Edith Catalina
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Large and face dependent neutral fractions have been found recently in the scattering of Li+ by Cu(1 0 0) and Cu(1 1 1) surfaces. These results for high work function surfaces are unexpected within the ‘traditional’ picture of a Li+ ion departing from a jellium surface model. In the present work the Li+/Cu(1 0 0) and Li+/Cu(1 1 1) interacting systems are described by a previously developed bond-pair model based on the localized interactions between the projectile ion and the atoms of the surface, and on the extended features of the electronic band structure through the surface local density of states. By only including the resonant neutralization to the Li atom ground state we explained the face and energy dependences of the measured neutral fractions for large outgoing energy values. We found that the downward shift of the Li ionization level below the Fermi level caused by the short range chemical interactions, is the main responsible of a high neutralization by the resonant mechanism. The remaining differences between theory and experiment values can be explained in terms of the energy gaps and image potential states appearing in these surfaces. The calculated distance behaviours of the energy levels corresponding to the first excited (Li-1s22p) and the negative (Li-1s22s2) atomic configurations indicate that they can also participate in the ion-surface charge exchange process.
Fil: García, Evelina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Romero, Marcelo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: González, C.. Czech Academy of Sciences; República Checa
Fil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina
Materia
Charge Transfer
Alkali Metals
Electron Transfer
Neutralization Mechanisms
Atom-Solid Interaction
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/24438
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/24438
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interactionGarcía, Evelina AndreaRomero, Marcelo ArielGonzález, C.Goldberg, Edith CatalinaCharge TransferAlkali MetalsElectron TransferNeutralization MechanismsAtom-Solid Interactionhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Large and face dependent neutral fractions have been found recently in the scattering of Li+ by Cu(1 0 0) and Cu(1 1 1) surfaces. These results for high work function surfaces are unexpected within the ‘traditional’ picture of a Li+ ion departing from a jellium surface model. In the present work the Li+/Cu(1 0 0) and Li+/Cu(1 1 1) interacting systems are described by a previously developed bond-pair model based on the localized interactions between the projectile ion and the atoms of the surface, and on the extended features of the electronic band structure through the surface local density of states. By only including the resonant neutralization to the Li atom ground state we explained the face and energy dependences of the measured neutral fractions for large outgoing energy values. We found that the downward shift of the Li ionization level below the Fermi level caused by the short range chemical interactions, is the main responsible of a high neutralization by the resonant mechanism. The remaining differences between theory and experiment values can be explained in terms of the energy gaps and image potential states appearing in these surfaces. The calculated distance behaviours of the energy levels corresponding to the first excited (Li-1s22p) and the negative (Li-1s22s2) atomic configurations indicate that they can also participate in the ion-surface charge exchange process.Fil: García, Evelina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Romero, Marcelo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: González, C.. Czech Academy of Sciences; República ChecaFil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química; ArgentinaElsevier2008-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/24438García, Evelina Andrea; Romero, Marcelo Ariel; González, C.; Goldberg, Edith Catalina; Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interaction; Elsevier; Surface Science; 603; 4; 12-2008; 597-6050039-6028CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.susc.2008.12.022info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0039602808008649info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:07:40Zoai:ri.conicet.gov.ar:11336/24438instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:07:40.645CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interaction
title Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interaction
spellingShingle Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interaction
García, Evelina Andrea
Charge Transfer
Alkali Metals
Electron Transfer
Neutralization Mechanisms
Atom-Solid Interaction
title_short Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interaction
title_full Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interaction
title_fullStr Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interaction
title_full_unstemmed Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interaction
title_sort Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interaction
dc.creator.none.fl_str_mv García, Evelina Andrea
Romero, Marcelo Ariel
González, C.
Goldberg, Edith Catalina
author García, Evelina Andrea
author_facet García, Evelina Andrea
Romero, Marcelo Ariel
González, C.
Goldberg, Edith Catalina
author_role author
author2 Romero, Marcelo Ariel
González, C.
Goldberg, Edith Catalina
author2_role author
author
author
dc.subject.none.fl_str_mv Charge Transfer
Alkali Metals
Electron Transfer
Neutralization Mechanisms
Atom-Solid Interaction
topic Charge Transfer
Alkali Metals
Electron Transfer
Neutralization Mechanisms
Atom-Solid Interaction
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Large and face dependent neutral fractions have been found recently in the scattering of Li+ by Cu(1 0 0) and Cu(1 1 1) surfaces. These results for high work function surfaces are unexpected within the ‘traditional’ picture of a Li+ ion departing from a jellium surface model. In the present work the Li+/Cu(1 0 0) and Li+/Cu(1 1 1) interacting systems are described by a previously developed bond-pair model based on the localized interactions between the projectile ion and the atoms of the surface, and on the extended features of the electronic band structure through the surface local density of states. By only including the resonant neutralization to the Li atom ground state we explained the face and energy dependences of the measured neutral fractions for large outgoing energy values. We found that the downward shift of the Li ionization level below the Fermi level caused by the short range chemical interactions, is the main responsible of a high neutralization by the resonant mechanism. The remaining differences between theory and experiment values can be explained in terms of the energy gaps and image potential states appearing in these surfaces. The calculated distance behaviours of the energy levels corresponding to the first excited (Li-1s22p) and the negative (Li-1s22s2) atomic configurations indicate that they can also participate in the ion-surface charge exchange process.
Fil: García, Evelina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Romero, Marcelo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: González, C.. Czech Academy of Sciences; República Checa
Fil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina
description Large and face dependent neutral fractions have been found recently in the scattering of Li+ by Cu(1 0 0) and Cu(1 1 1) surfaces. These results for high work function surfaces are unexpected within the ‘traditional’ picture of a Li+ ion departing from a jellium surface model. In the present work the Li+/Cu(1 0 0) and Li+/Cu(1 1 1) interacting systems are described by a previously developed bond-pair model based on the localized interactions between the projectile ion and the atoms of the surface, and on the extended features of the electronic band structure through the surface local density of states. By only including the resonant neutralization to the Li atom ground state we explained the face and energy dependences of the measured neutral fractions for large outgoing energy values. We found that the downward shift of the Li ionization level below the Fermi level caused by the short range chemical interactions, is the main responsible of a high neutralization by the resonant mechanism. The remaining differences between theory and experiment values can be explained in terms of the energy gaps and image potential states appearing in these surfaces. The calculated distance behaviours of the energy levels corresponding to the first excited (Li-1s22p) and the negative (Li-1s22s2) atomic configurations indicate that they can also participate in the ion-surface charge exchange process.
publishDate 2008
dc.date.none.fl_str_mv 2008-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/24438
García, Evelina Andrea; Romero, Marcelo Ariel; González, C.; Goldberg, Edith Catalina; Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interaction; Elsevier; Surface Science; 603; 4; 12-2008; 597-605
0039-6028
CONICET Digital
CONICET
url http://hdl.handle.net/11336/24438
identifier_str_mv García, Evelina Andrea; Romero, Marcelo Ariel; González, C.; Goldberg, Edith Catalina; Neutralization of Li+ ions scattered by the Cu (100) and (111) surfaces: A localized picture of the atom-surface interaction; Elsevier; Surface Science; 603; 4; 12-2008; 597-605
0039-6028
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.susc.2008.12.022
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0039602808008649
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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