A novel laboratory-based hard X-ray photoelectron spectroscopy system.

Autor: Regoutz A; Department of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom., Mascheck M; Scienta Omicron GmbH, Limburger Strasse 75, 65232 Taunusstein, Germany., Wiell T; Scienta Omicron AB, P.O. Box 15120, 750 15 Uppsala, Sweden., Eriksson SK; Scienta Omicron AB, P.O. Box 15120, 750 15 Uppsala, Sweden., Liljenberg C; Scienta Omicron AB, P.O. Box 15120, 750 15 Uppsala, Sweden., Tetzner K; Department of Physics, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom., Williamson BAD; Department of Chemistry, University College London, Christopher Ingold Building, 20 Gordon Street, London WC1H 0AJ, United Kingdom., Scanlon DO; Department of Chemistry, University College London, Christopher Ingold Building, 20 Gordon Street, London WC1H 0AJ, United Kingdom., Palmgren P; Scienta Omicron AB, P.O. Box 15120, 750 15 Uppsala, Sweden.
Jazyk: angličtina
Zdroj: The Review of scientific instruments [Rev Sci Instrum] 2018 Jul; Vol. 89 (7), pp. 073105.
DOI: 10.1063/1.5039829
Abstrakt: Hard X-ray photoelectron spectroscopy (HAXPES) has seen continuous development since the first experiments in the 1970s. HAXPES systems are predominantly located at synchrotron sources due to low photoionization cross sections necessitating high X-ray intensities, which limits the technique's availability to a wide range of users and potential applications. Here, a new laboratory-based instrument capable of delivering monochromated X-rays with an energy of 9.25 keV and a microfocused 30 × 45 μm 2 X-ray spot is introduced. The system gives an excellent energy resolution of below 500 meV coupled with good X-ray intensity. It allows stable measurements under grazing incidence conditions to maximise signal intensities. This article outlines the instrument behavior, showcases applications including bulk and multilayer measurements, and describes the overall performance of the spectrometer. This system presents an alternative to synchrotron-based experimental end stations and will help expand the number and range of HAXPES experiments performed in the future.
Databáze: MEDLINE
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