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

Ari-Pekka Honkanen, Sami Ollikkala, Taru Ahopelto, Antti-Jussi Kallio, Merja Blomberg, Simo Huotari

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Sammanfattning

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.

Originalspråkengelska
Artikelnummer033107
TidskriftReview of Scientific Instruments
Volym90
Nummer3
Antal sidor9
ISSN0034-6748
DOI
StatusPublicerad - 26 mars 2019
MoE-publikationstypA1 Tidskriftsartikel-refererad

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