The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yield
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2023 |
| Outros Autores: | , , , , , , , , , , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
| Texto Completo: | http://hdl.handle.net/10362/159773 |
Resumo: | Funding Information: A.M. F. wishes to thank Instituto Superior Técnico for the Scientific Employment contract IST-ID/131/2018. Publisher Copyright: © 2023 by the authors. |
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oai:run.unl.pt:10362/159773 |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yieldamorphous carbonparticle acceleratorsRaman spectroscopySEYXPSCatalysisMolecular BiologySpectroscopyComputer Science ApplicationsPhysical and Theoretical ChemistryOrganic ChemistryInorganic ChemistryFunding Information: A.M. F. wishes to thank Instituto Superior Técnico for the Scientific Employment contract IST-ID/131/2018. Publisher Copyright: © 2023 by the authors.Over the last few years, there has been increasing interest in the use of amorphous carbon thin films with low secondary electron yield (SEY) to mitigate electron multipacting in particle accelerators and RF devices. Previous works found that the SEY increases with the amount of incorporated hydrogen and correlates with the Tauc gap. In this work, we analyse films produced by magnetron sputtering with different contents of hydrogen and deuterium incorporated via the target poisoning and sputtering of CxDy molecules. XPS was implemented to estimate the phase composition of the films. The maximal SEY was found to decrease linearly with the fraction of the graphitic phase in the films. These results are supported by Raman scattering and UPS measurements. The graphitic phase decreases almost linearly for hydrogen and deuterium concentrations between 12% and 46% (at.), but abruptly decreases when the concentration reaches 53%. This vanishing of the graphitic phase is accompanied by a strong increase of SEY and the Tauc gap. These results suggest that the SEY is not dictated directly by the concentration of H/D, but by the fraction of the graphitic phase in the film. The results are supported by an original model used to calculate the SEY of films consisting of a mixture of graphitic and polymeric phases.DF – Departamento de FísicaCeFITec – Centro de Física e Investigação TecnológicaDCM - Departamento de Ciência dos MateriaisCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)RUNBundaleski, NenadAdame, Carolina F.Alves, EduardoBarradas, Nuno P.Cerqueira, Maria F.Deuermeier, JonasDelaup, YorickFerraria, Ana M.Ferreira, Isabel M. M.Neupert, HolgerHimmerlich, MarcelRego, Ana Maria M. B. doRimoldi, MartinoTeodoro, Orlando M. N. D.Vasilevskiy, MikhailCosta Pinto, Pedro2023-11-09T22:09:55Z2023-08-202023-08-20T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article20application/pdfhttp://hdl.handle.net/10362/159773eng1661-6596PURE: 75767085https://doi.org/10.3390/ijms241612999info: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:RCAAP2024-03-11T05:42:15Zoai:run.unl.pt:10362/159773Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:57:42.379940Repositório 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 |
The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yield |
| title |
The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yield |
| spellingShingle |
The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yield Bundaleski, Nenad amorphous carbon particle accelerators Raman spectroscopy SEY XPS Catalysis Molecular Biology Spectroscopy Computer Science Applications Physical and Theoretical Chemistry Organic Chemistry Inorganic Chemistry |
| title_short |
The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yield |
| title_full |
The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yield |
| title_fullStr |
The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yield |
| title_full_unstemmed |
The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yield |
| title_sort |
The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yield |
| author |
Bundaleski, Nenad |
| author_facet |
Bundaleski, Nenad Adame, Carolina F. Alves, Eduardo Barradas, Nuno P. Cerqueira, Maria F. Deuermeier, Jonas Delaup, Yorick Ferraria, Ana M. Ferreira, Isabel M. M. Neupert, Holger Himmerlich, Marcel Rego, Ana Maria M. B. do Rimoldi, Martino Teodoro, Orlando M. N. D. Vasilevskiy, Mikhail Costa Pinto, Pedro |
| author_role |
author |
| author2 |
Adame, Carolina F. Alves, Eduardo Barradas, Nuno P. Cerqueira, Maria F. Deuermeier, Jonas Delaup, Yorick Ferraria, Ana M. Ferreira, Isabel M. M. Neupert, Holger Himmerlich, Marcel Rego, Ana Maria M. B. do Rimoldi, Martino Teodoro, Orlando M. N. D. Vasilevskiy, Mikhail Costa Pinto, Pedro |
| author2_role |
author author author author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
DF – Departamento de Física CeFITec – Centro de Física e Investigação Tecnológica DCM - Departamento de Ciência dos Materiais CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N) RUN |
| dc.contributor.author.fl_str_mv |
Bundaleski, Nenad Adame, Carolina F. Alves, Eduardo Barradas, Nuno P. Cerqueira, Maria F. Deuermeier, Jonas Delaup, Yorick Ferraria, Ana M. Ferreira, Isabel M. M. Neupert, Holger Himmerlich, Marcel Rego, Ana Maria M. B. do Rimoldi, Martino Teodoro, Orlando M. N. D. Vasilevskiy, Mikhail Costa Pinto, Pedro |
| dc.subject.por.fl_str_mv |
amorphous carbon particle accelerators Raman spectroscopy SEY XPS Catalysis Molecular Biology Spectroscopy Computer Science Applications Physical and Theoretical Chemistry Organic Chemistry Inorganic Chemistry |
| topic |
amorphous carbon particle accelerators Raman spectroscopy SEY XPS Catalysis Molecular Biology Spectroscopy Computer Science Applications Physical and Theoretical Chemistry Organic Chemistry Inorganic Chemistry |
| description |
Funding Information: A.M. F. wishes to thank Instituto Superior Técnico for the Scientific Employment contract IST-ID/131/2018. Publisher Copyright: © 2023 by the authors. |
| publishDate |
2023 |
| dc.date.none.fl_str_mv |
2023-11-09T22:09:55Z 2023-08-20 2023-08-20T00:00:00Z |
| 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/10362/159773 |
| url |
http://hdl.handle.net/10362/159773 |
| dc.language.iso.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
1661-6596 PURE: 75767085 https://doi.org/10.3390/ijms241612999 |
| dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
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20 application/pdf |
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reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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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) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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