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

D. Bajek; S. Wackerow; D. A. Zanin; L. Baudin; K. Bogdanowicz; E. Garcia Tabares Valdivieso; S. Calatroni; B. Di Girolamo; M. Sitko; M. Himmerlich; M. Taborelli; P. Chiggiato; A. Abdolvand

doi:10.1038/s41598-019-57160-w

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

D. Bajek, S. Wackerow, D. A. Zanin, L. Baudin, K. Bogdanowicz, E. Garcia Tabares Valdivieso, S. Calatroni, B. Di Girolamo, M. Sitko, M. Himmerlich, M. Taborelli, P. Chiggiato, A. Abdolvand^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

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 language	English
Article number	250
Journal	Scientific Reports
Volume	10
Issue number	1
DOIs	https://doi.org/10.1038/s41598-019-57160-w
Publication status	Published - 14 Jan 2020

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Bajek, D., Wackerow, S., Zanin, D. A., Baudin, L., Bogdanowicz, K., Valdivieso, E. G. T., 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, 10(1), Article 250. https://doi.org/10.1038/s41598-019-57160-w

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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 = "D. Bajek and S. Wackerow and Zanin, {D. A.} and L. Baudin and K. Bogdanowicz and Valdivieso, {E. Garcia Tabares} and S. Calatroni and {Di Girolamo}, B. and M. Sitko and M. Himmerlich and M. Taborelli and P. Chiggiato and A. Abdolvand",

note = "Funding Information: 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. Letant-Delrieux, C. Charvet, and B. Teissandier (CERN). Publisher Copyright: {\textcopyright} 2020, The Author(s).",

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doi = "10.1038/s41598-019-57160-w",

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Bajek, D, Wackerow, S, Zanin, DA, Baudin, L, Bogdanowicz, K, Valdivieso, EGT, 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. 10, no. 1, 250. https://doi.org/10.1038/s41598-019-57160-w

TY - JOUR

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

AU - Bajek, D.

AU - Wackerow, S.

AU - Zanin, D. A.

AU - Baudin, L.

AU - Bogdanowicz, K.

AU - Valdivieso, E. Garcia Tabares

AU - Calatroni, S.

AU - Di Girolamo, B.

AU - Sitko, M.

AU - Himmerlich, M.

AU - Taborelli, M.

AU - Chiggiato, P.

AU - Abdolvand, A.

N1 - Funding Information: 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. Letant-Delrieux, C. Charvet, and B. Teissandier (CERN). Publisher Copyright: © 2020, The Author(s).

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.

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

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