Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces

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The influence of microgeometries on the Secondary Electron Yield (SEY) of surfaces is investigated. Laser written structures of different aspect ratio (height to width) on a copper surface tuned the SEY of the surface and reduced its value to less than unity. The aspect ratio of microstructures was...

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Autores principales: Bajek, D., Wackerow, S., Zanin, D. A., Baudin, L., Bogdanowicz, K., Valdivieso, E. Garcia-Tabares, Calatroni, S., Di Girolamo, B., Sitko, M., Himmerlich, M., Taborelli, M., Chiggiato, P., Abdolvand, A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6959246/
https://www.ncbi.nlm.nih.gov/pubmed/31937857
http://dx.doi.org/10.1038/s41598-019-57160-w
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author Bajek, D.
Wackerow, S.
Zanin, D. A.
Baudin, L.
Bogdanowicz, K.
Valdivieso, E. Garcia-Tabares
Calatroni, S.
Di Girolamo, B.
Sitko, M.
Himmerlich, M.
Taborelli, M.
Chiggiato, P.
Abdolvand, A.
author_facet Bajek, D.
Wackerow, S.
Zanin, D. A.
Baudin, L.
Bogdanowicz, K.
Valdivieso, E. Garcia-Tabares
Calatroni, S.
Di Girolamo, B.
Sitko, M.
Himmerlich, M.
Taborelli, M.
Chiggiato, P.
Abdolvand, A.
author_sort Bajek, D.
collection PubMed
description The influence of microgeometries on the Secondary Electron Yield (SEY) of surfaces is investigated. Laser written structures of different aspect ratio (height to width) on a copper surface tuned the SEY of the surface and reduced its value to less than unity. The aspect ratio of microstructures was methodically controlled by varying the laser parameters. The results obtained corroborate a recent theoretical model of SEY reduction as a function of the aspect ratio of microstructures. Nanostructures - which are formed inside the microstructures during the interaction with the laser beam - provided further reduction in SEY comparable to that obtained in the simulation of structures which were coated with an absorptive layer suppressing secondary electron emission.
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spelling pubmed-69592462020-01-16 Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces Bajek, D. Wackerow, S. Zanin, D. A. Baudin, L. Bogdanowicz, K. Valdivieso, E. Garcia-Tabares Calatroni, S. Di Girolamo, B. Sitko, M. Himmerlich, M. Taborelli, M. Chiggiato, P. Abdolvand, A. Sci Rep Article The influence of microgeometries on the Secondary Electron Yield (SEY) of surfaces is investigated. Laser written structures of different aspect ratio (height to width) on a copper surface tuned the SEY of the surface and reduced its value to less than unity. The aspect ratio of microstructures was methodically controlled by varying the laser parameters. The results obtained corroborate a recent theoretical model of SEY reduction as a function of the aspect ratio of microstructures. Nanostructures - which are formed inside the microstructures during the interaction with the laser beam - provided further reduction in SEY comparable to that obtained in the simulation of structures which were coated with an absorptive layer suppressing secondary electron emission. Nature Publishing Group UK 2020-01-14 /pmc/articles/PMC6959246/ /pubmed/31937857 http://dx.doi.org/10.1038/s41598-019-57160-w Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Bajek, D.
Wackerow, S.
Zanin, D. A.
Baudin, L.
Bogdanowicz, K.
Valdivieso, E. Garcia-Tabares
Calatroni, S.
Di Girolamo, B.
Sitko, M.
Himmerlich, M.
Taborelli, M.
Chiggiato, P.
Abdolvand, A.
Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces
title Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces
title_full Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces
title_fullStr Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces
title_full_unstemmed Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces
title_short Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces
title_sort role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6959246/
https://www.ncbi.nlm.nih.gov/pubmed/31937857
http://dx.doi.org/10.1038/s41598-019-57160-w
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