Johann-type laboratory-scale x-ray absorption spectrometer with versatile detection modes

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http://hdl.handle.net/10138/301061

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Honkanen , A-P , Ollikkala , S , Ahopelto , T , Kallio , A-J , Blomberg , M & Huotari , S 2019 , ' Johann-type laboratory-scale x-ray absorption spectrometer with versatile detection modes ' , Review of Scientific Instruments , vol. 90 , no. 3 , 033107 . https://doi.org/10.1063/1.5084049

Title: Johann-type laboratory-scale x-ray absorption spectrometer with versatile detection modes
Author: Honkanen, Ari-Pekka; Ollikkala, Sami; Ahopelto, Taru; Kallio, Antti-Jussi; Blomberg, Merja; Huotari, Simo
Contributor: University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
Date: 2019-03-26
Language: eng
Number of pages: 9
Belongs to series: Review of Scientific Instruments
ISSN: 0034-6748
URI: http://hdl.handle.net/10138/301061
Abstract: We present a low-cost laboratory X-ray absorption spectrometer that uses a conventional X-ray tube source and bent Johann-type crystal monochromators. The instrument is designed for X-ray absorption spectroscopy studies in the 4-20 keV range which covers most K edges of 3d transition metals and L edges of 5d transition metals and actinides. The energy resolution is typically in the range of 1-5 eV at 10 keV depending on the crystal analyser and the Bragg angle. Measurements can be performed in transmission, fluorescence, and imaging modes. Due to its simple and modular design, the spectrometer can be modified to accommodate additional equipment and complex sample environments required for in situ studies. A showcase of various applications is presented. Published under license by AIP Publishing.
Subject: ANALYZERS
ATOMIC LAYER DEPOSITION
BENT CRYSTAL
DIFFRACTION
DYNAMICAL THEORY
EXAFS
PERFORMANCE
RESOLUTION
SCATTERING
SPECTROSCOPY
114 Physical sciences
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