Spherical micro-hole grid for high-resolution retarding field analyzer

Takayuki Muro*, Tomohiro Matsushit, Kazumi Sawamura, Jun Mizuno

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


A wide-acceptance-angle spherical grid composed of numerous micro cylindrical holes was developed to be used for the retarding grid of a display-type retarding field analyzer (RFA) and to enhance the energy resolution (E/ΔE). Each cylindrical hole with a diameter of 50 μm and a depth of 80 μm is directed to the spherical center. The inner radius of the spherical grid is 40 mm. The holed area corresponds to an acceptance angle of ±52°. The E/ΔE of an RFA equipped with the developed holed grid was estimated to be 2000 from a measured Au 4f photoemission spectrum. A clear photoelectron hologram was observed in the Mo 4p core-level region of MoS2, indicating that the RFA with the holed grid is effective for photoelectron holography.

Original languageEnglish
Pages (from-to)1669-1671
Number of pages3
JournalJournal of Synchrotron Radiation
Publication statusPublished - 2021 Sep 1


  • micro cylindrical holes
  • photoelectron holography
  • retarding field analyzers
  • spherical grids

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Instrumentation


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