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

David Bajek, Stefan Wackerow, D. A. Zanin, Lucie Baudin, K. Bogdanowicz, Elisa Garcia-Tabares Valdivieso, Sergio Calatroni, B. Di Girolamo, Monika Sitko, Marcel Himmerlich, Mauro Taborelli, Paolo Chiggiato, Amin Abdolvand

Research output: Contribution to journalArticle

Abstract

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.
Original languageEnglish
Article number250
Pages (from-to)1-8
Number of pages8
JournalScientific Reports
Volume8
DOIs
Publication statusPublished - 14 Jan 2020

Fingerprint

metal surfaces
escape
aspect ratio
microstructure
electrons
secondary emission
electron emission
lasers
unity
laser beams
copper
simulation
interactions

Cite this

Bajek, David ; Wackerow, Stefan ; Zanin, D. A. ; Baudin, Lucie ; Bogdanowicz, K. ; Garcia-Tabares Valdivieso, Elisa ; Calatroni, Sergio ; Di Girolamo, B. ; Sitko, Monika ; Himmerlich, Marcel ; Taborelli, Mauro ; Chiggiato, Paolo ; Abdolvand, Amin. / Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces. In: Scientific Reports. 2020 ; Vol. 8. pp. 1-8.
@article{48d271a4752b41319c9acaeb5f4e3231,
title = "Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces",
abstract = "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.",
author = "David Bajek and Stefan Wackerow and Zanin, {D. A.} and Lucie Baudin and K. Bogdanowicz and {Garcia-Tabares Valdivieso}, Elisa and Sergio Calatroni and {Di Girolamo}, B. and Monika Sitko and Marcel Himmerlich and Mauro Taborelli and Paolo Chiggiato and Amin Abdolvand",
note = "This work was conducted under the aegis of grants and financial support from the Science & Technology Facilities Council (STFC) of the United Kingdom (Grant No. ST/P00086X/1) and CERN (Collaboration Agreement KN3362). We are grateful for technical support by D. LetantDelrieux, C. Charvet, and B. Teissandier (CERN",
year = "2020",
month = "1",
day = "14",
doi = "10.1038/s41598-019-57160-w",
language = "English",
volume = "8",
pages = "1--8",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

Bajek, D, Wackerow, S, Zanin, DA, Baudin, L, Bogdanowicz, K, Garcia-Tabares Valdivieso, E, Calatroni, S, Di Girolamo, B, Sitko, M, Himmerlich, M, Taborelli, M, Chiggiato, P & Abdolvand, A 2020, 'Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces', Scientific Reports, vol. 8, 250, pp. 1-8. https://doi.org/10.1038/s41598-019-57160-w

Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces. / Bajek, David; Wackerow, Stefan; Zanin, D. A. ; Baudin, Lucie; Bogdanowicz, K. ; Garcia-Tabares Valdivieso, Elisa; Calatroni, Sergio; Di Girolamo, B.; Sitko, Monika; Himmerlich, Marcel; Taborelli, Mauro; Chiggiato, Paolo; Abdolvand, Amin.

In: Scientific Reports, Vol. 8, 250, 14.01.2020, p. 1-8.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces

AU - Bajek, David

AU - Wackerow, Stefan

AU - Zanin, D. A.

AU - Baudin, Lucie

AU - Bogdanowicz, K.

AU - Garcia-Tabares Valdivieso, Elisa

AU - Calatroni, Sergio

AU - Di Girolamo, B.

AU - Sitko, Monika

AU - Himmerlich, Marcel

AU - Taborelli, Mauro

AU - Chiggiato, Paolo

AU - Abdolvand, Amin

N1 - This work was conducted under the aegis of grants and financial support from the Science & Technology Facilities Council (STFC) of the United Kingdom (Grant No. ST/P00086X/1) and CERN (Collaboration Agreement KN3362). We are grateful for technical support by D. LetantDelrieux, C. Charvet, and B. Teissandier (CERN

PY - 2020/1/14

Y1 - 2020/1/14

N2 - 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.

AB - 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.

U2 - 10.1038/s41598-019-57160-w

DO - 10.1038/s41598-019-57160-w

M3 - Article

VL - 8

SP - 1

EP - 8

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 250

ER -