Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
14 Jan 2020
14 Jan 2020
Historique:
received:
09
08
2019
accepted:
19
12
2019
entrez:
16
1
2020
pubmed:
16
1
2020
medline:
16
1
2020
Statut:
epublish
Résumé
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.
Identifiants
pubmed: 31937857
doi: 10.1038/s41598-019-57160-w
pii: 10.1038/s41598-019-57160-w
pmc: PMC6959246
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
250Subventions
Organisme : Science and Technology Facilities Council, United Kingdom
ID : ST/P00086X/1
Organisme : Science and Technology Facilities Council, United Kingdom
ID : ST/P00086X/1
Organisme : Science and Technology Facilities Council, United Kingdom
ID : ST/P00086X/1
Organisme : CERN, Switzerland
ID : KN3362
Organisme : CERN, Switzerland
ID : KN3362
Organisme : CERN, Switzerland
ID : KN3362
Organisme : CERN, Switzerland
ID : KN3362
Organisme : CERN, Switzerland
ID : KN3362
Organisme : CERN, Switzerland
ID : KN3362
Organisme : CERN, Switzerland
ID : KN3362
Organisme : CERN, Switzerland
ID : KN3362
Organisme : CERN, Switzerland
ID : KN3362
Organisme : CERN, Switzerland
ID : KN3362
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