A fluorescence-yield wavelength-dispersive x-ray absorption spectroscopy technique in the soft x-ray region, by which the x-ray absorption spectra are recorded without scanning the monochromator, has been developed. The wavelength-dispersed soft x rays, in which the wavelength (photon energy) continuously changes as a function of the position, illuminate the sample, and the emitted fluorescence soft x rays at each position are separately focused by an imaging optics onto each position at a soft x-ray detector. Ni L-edge x-ray absorption spectra for Ni and NiO thin films taken in the wavelength-dispersive mode are shown in order to demonstrate the validity of the technique. The development of the technique paves the way for a real-time observation of time-dependent processes, such as surface chemical reactions, with much higher gas pressure compared to the electron-yield mode, as well as under magnetic and electric fields.
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September 2020
Research Article|
September 17 2020
Development of fluorescence-yield wavelength-dispersive x-ray absorption spectroscopy in the soft x-ray region for time-resolved experiments
K. Amemiya
;
K. Amemiya
a)
1
Institute of Materials Structure Science, High Energy Accelerator Research Organization
, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
2
Department of Materials Structure Science, SOKENDAI (The Graduate University for Advanced Studies)
, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
a)Author to whom correspondence should be addressed: kenta.amemiya@kek.jp
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K. Sakata
;
K. Sakata
1
Institute of Materials Structure Science, High Energy Accelerator Research Organization
, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
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M. Suzuki-Sakamaki
M. Suzuki-Sakamaki
1
Institute of Materials Structure Science, High Energy Accelerator Research Organization
, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
3
Graduate School of Science and Technology, Gunma University
, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
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a)Author to whom correspondence should be addressed: kenta.amemiya@kek.jp
Rev. Sci. Instrum. 91, 093104 (2020)
Article history
Received:
July 15 2020
Accepted:
August 30 2020
Citation
K. Amemiya, K. Sakata, M. Suzuki-Sakamaki; Development of fluorescence-yield wavelength-dispersive x-ray absorption spectroscopy in the soft x-ray region for time-resolved experiments. Rev. Sci. Instrum. 1 September 2020; 91 (9): 093104. https://doi.org/10.1063/5.0021981
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