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X-ray absorption measurements at a bending magnet beamline with an Everhart–Thornley detector: A monolayer of Ho<sub>3</sub>N@C<sub>80</sub> on graphene


Lee, Wei Chuang; Sagehashi, Ryunosuke; Zhang, Yang; Popov, Alexey A; Muntwiler, Matthias; Greber, Thomas (2022). X-ray absorption measurements at a bending magnet beamline with an Everhart–Thornley detector: A monolayer of Ho<sub>3</sub>N@C<sub>80</sub> on graphene. Journal of Vacuum Science & Technology A, 40(5):053205.

Abstract

X-ray Absorption Spectroscopy (XAS) is used for measuring monolayer quantities of Ho[Formula: see text]N@C[Formula: see text] endofullerene molecules on graphene at a low flux bending magnet beamline. The total electron yield is measured with an Everhart–Thornley detector. In comparison to sample current measurements with the same noise level, our approach reduces data acquisition time and radiation dose by a factor of 25. As the first application of this setup, we report temperature-dependent measurements of the Ho M[Formula: see text] edge with per mille accuracy. This documents the advantages and capabilities of an Everhart–Thornely detector for XAS measurements under low x-ray flux.

Abstract

X-ray Absorption Spectroscopy (XAS) is used for measuring monolayer quantities of Ho[Formula: see text]N@C[Formula: see text] endofullerene molecules on graphene at a low flux bending magnet beamline. The total electron yield is measured with an Everhart–Thornley detector. In comparison to sample current measurements with the same noise level, our approach reduces data acquisition time and radiation dose by a factor of 25. As the first application of this setup, we report temperature-dependent measurements of the Ho M[Formula: see text] edge with per mille accuracy. This documents the advantages and capabilities of an Everhart–Thornely detector for XAS measurements under low x-ray flux.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Condensed Matter Physics
Physical Sciences > Surfaces and Interfaces
Physical Sciences > Surfaces, Coatings and Films
Uncontrolled Keywords:Surfaces, Coatings and Films, Surfaces and Interfaces, Condensed Matter Physics
Language:English
Date:1 September 2022
Deposited On:20 Feb 2023 16:37
Last Modified:28 Jun 2024 01:42
Publisher:American Institute of Physics
ISSN:0734-2101
OA Status:Green
Publisher DOI:https://doi.org/10.1116/6.0001961
  • Content: Published Version
  • Language: English