Open AccessSpherical micro‐hole grid for high‐resolution retarding field analyzer
Author(s) -
Muro Takayuki,
Matsushita Tomohiro,
Sawamura Kazumi,
Mizuno Jun
Publication year - 2021
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577521007773
Subject(s) - radius , grid , spectrum analyzer , x ray photoelectron spectroscopy , core (optical fiber) , materials science , resolution (logic) , field (mathematics) , holography , optics , physics , computational physics , geometry , nuclear magnetic resonance , computer science , computer security , mathematics , artificial intelligence , pure mathematics
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 /Δ E ). 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 /Δ E of an RFA equipped with the developed holed grid was estimated to be 2000 from a measured Au 4 f photoemission spectrum. A clear photoelectron hologram was observed in the Mo 4 p core‐level region of MoS 2 , indicating that the RFA with the holed grid is effective for photoelectron holography.