Electron stimulated desorption from condensed benzene

Detalhes bibliográficos
Autor(a) principal: Álvarez, L.
Data de Publicação: 2024
Outros Autores: Bass, A. D., Lozano, A. I., García-Abenza, A., Limão-Vieira, P., Sanche, L., García, G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/172400
Resumo: Funding Information: This study has partially been supported by the Spanish Ministry of Science and Innovation (Project PID2019-104727RB-C21), A. G. A. and L. A. thank MICIU and the local CAM government, respectively, for their corresponding grants within the “Garantía Juvenil” programmes. A. I. L. and P. L. V. acknowledge the Portuguese National Funding Agency (FCT) through research Grants CEFITEC (UIDB/00068/2020). The experiments were supported by the Natural Science and Engineering Research Council of Canada (RGPIN-2018-14882). Publisher Copyright: © 2024 The Royal Society of Chemistry.
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spelling Electron stimulated desorption from condensed benzenePhysics and Astronomy(all)Physical and Theoretical ChemistryFunding Information: This study has partially been supported by the Spanish Ministry of Science and Innovation (Project PID2019-104727RB-C21), A. G. A. and L. A. thank MICIU and the local CAM government, respectively, for their corresponding grants within the “Garantía Juvenil” programmes. A. I. L. and P. L. V. acknowledge the Portuguese National Funding Agency (FCT) through research Grants CEFITEC (UIDB/00068/2020). The experiments were supported by the Natural Science and Engineering Research Council of Canada (RGPIN-2018-14882). Publisher Copyright: © 2024 The Royal Society of Chemistry.The electron induced dissociation of condensed benzene (C6H6) in thin films deposited on a Pt substrate is investigated by electron stimulated desorption (ESD) of anions and cations. The desorbed yields are recorded as a function of incident electron energy in the range of 10 to 950 eV for a fixed film thickness of 2 monolayers (ML) and for a fixed energy of 950 eV, as well as a function of film thickness from 0.5 to 8 monolayers (ML) for anions, and from 0.5 to 12ML for cations. Both energy and thickness dependencies are discussed in terms of the three main mechanisms yielding positively and/or negatively charged fragments: dissociative electron attachment (DEA), dipolar dissociation (DD) and dissociative ionization (DI) processes. At the probed energies, DD is the major mechanism, while DEA is predominantly induced by secondary electrons from the Pt substrate. Desorption of the parent positive ion is strongly suppressed. Similar qualitative behaviours are observed for the energy dependence of both anion and cation ESD yields, while some discrepancies exist in the thickness dependence, including a very significant systematic magnitude difference found between such ions formation. An estimation of the effective DD cross-section including the desorption probability is obtained. Feasible mechanisms behind the observed energy and thickness dependences for anion and cation yields are proposed. These results highlight the need for further investigations to better understand the underlying processes of electron induced dissociation in condensed matter.CeFITec – Centro de Física e Investigação TecnológicaDF – Departamento de FísicaRUNÁlvarez, L.Bass, A. D.Lozano, A. I.García-Abenza, A.Limão-Vieira, P.Sanche, L.García, G.2024-09-25T22:26:20Z2024-03-202024-03-20T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10application/pdfhttp://hdl.handle.net/10362/172400eng1463-9076PURE: 99739935https://doi.org/10.1039/d3cp06289ainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-09-30T01:43:02Zoai:run.unl.pt:10362/172400Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-09-30T01:43:02Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Electron stimulated desorption from condensed benzene
title Electron stimulated desorption from condensed benzene
spellingShingle Electron stimulated desorption from condensed benzene
Álvarez, L.
Physics and Astronomy(all)
Physical and Theoretical Chemistry
title_short Electron stimulated desorption from condensed benzene
title_full Electron stimulated desorption from condensed benzene
title_fullStr Electron stimulated desorption from condensed benzene
title_full_unstemmed Electron stimulated desorption from condensed benzene
title_sort Electron stimulated desorption from condensed benzene
author Álvarez, L.
author_facet Álvarez, L.
Bass, A. D.
Lozano, A. I.
García-Abenza, A.
Limão-Vieira, P.
Sanche, L.
García, G.
author_role author
author2 Bass, A. D.
Lozano, A. I.
García-Abenza, A.
Limão-Vieira, P.
Sanche, L.
García, G.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv CeFITec – Centro de Física e Investigação Tecnológica
DF – Departamento de Física
RUN
dc.contributor.author.fl_str_mv Álvarez, L.
Bass, A. D.
Lozano, A. I.
García-Abenza, A.
Limão-Vieira, P.
Sanche, L.
García, G.
dc.subject.por.fl_str_mv Physics and Astronomy(all)
Physical and Theoretical Chemistry
topic Physics and Astronomy(all)
Physical and Theoretical Chemistry
description Funding Information: This study has partially been supported by the Spanish Ministry of Science and Innovation (Project PID2019-104727RB-C21), A. G. A. and L. A. thank MICIU and the local CAM government, respectively, for their corresponding grants within the “Garantía Juvenil” programmes. A. I. L. and P. L. V. acknowledge the Portuguese National Funding Agency (FCT) through research Grants CEFITEC (UIDB/00068/2020). The experiments were supported by the Natural Science and Engineering Research Council of Canada (RGPIN-2018-14882). Publisher Copyright: © 2024 The Royal Society of Chemistry.
publishDate 2024
dc.date.none.fl_str_mv 2024-09-25T22:26:20Z
2024-03-20
2024-03-20T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/172400
url http://hdl.handle.net/10362/172400
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1463-9076
PURE: 99739935
https://doi.org/10.1039/d3cp06289a
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 10
application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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