A laboratory spectrometer for high throughput X-ray emission spectroscopy in catalysis research | Zendy

Wolfgang Malzer | Zendy; Daniel Grötzsch | Zendy; Richard Gnewkow | Zendy; Christopher Schlesiger | Zendy; Fabian Kowalewski | Zendy; Benjamin E. Van Kuiken | Zendy; Serena DeBeer | Zendy; Birgit Kanngießer | Zendy

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A laboratory spectrometer for high throughput X-ray emission spectroscopy in catalysis research

Author(s) -

Wolfgang Malzer,

Daniel Grötzsch,

Richard Gnewkow,

Christopher Schlesiger,

Fabian Kowalewski,

Benjamin E. Van Kuiken,

Serena DeBeer,

Birgit Kanngießer

Publication year - 2018

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.5035171

Subject(s) - spectrometer , pyrolytic carbon , highly oriented pyrolytic graphite , spectroscopy , x ray spectroscopy , optics , spectral resolution , soft x ray emission spectroscopy , resolution (logic) , materials science , range (aeronautics) , physics , analytical chemistry (journal) , graphite , spectral line , computer science , chemistry , pyrolysis , time resolved spectroscopy , organic chemistry , chromatography , quantum mechanics , astronomy , artificial intelligence , composite material

We have built a laboratory spectrometer for X-ray emission spectroscopy. The instrument is employed in catalysis research. The key component is a von Hamos full cylinder optic with Highly Annealed Pyrolytic Graphite (HAPG) as a dispersive element. With this very efficient optic, the spectrometer subtends an effective solid angle of detection of around 1 msr, allowing for the analysis of dilute samples. The resolving power of the spectrometer is approximately E/ΔE = 4000, with an energy range of ∼2.3 keV-10 keV. The instrument and its characteristics are described herein. Further, a comparison with a prototype spectrometer, based on the same principle, shows the substantial improvement in the spectral resolution and energy range for the present setup. The paper concludes with a discussion of sample handling. A compilation of HAPG fundamentals and related publications are given in a brief Appendix.

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