1.
J Synchrotron Radiat
; 28(Pt 5): 1669-1671, 2021 Sep 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-34475314
RESUMO
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 50â µm and a depth of 80â µm is directed to the spherical center. The inner radius of the spherical grid is 40â 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.