Ultrafast x-ray photoelectron spectroscopy in the microsecond time domain

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Höfert O, Gleichweit C, Steinrück HP, Papp C
Zeitschrift: Review of Scientific Instruments
Verlag: American Institute of Physics (AIP)
Jahr der Veröffentlichung: 2013
Band: 84
Heftnummer: 9
ISSN: 0034-6748
eISSN: 1089-7623


Abstract


We introduce a new approach for ultrafast in situ high-resolution X-ray photoelectron spectroscopy (XPS) to study surface processes and reaction kinetics on the microsecond timescale. The main idea is to follow the intensity at a fixed binding energy using a commercial 7 channeltron electron analyzer with a modified signal processing setup. This concept allows for flexible switching between measuring conventional XP spectra and ultrafast XPS. The experimental modifications are described in detail. As an example, we present measurements for the adsorption and desorption of CO on Pt(111), performed at the synchrotron radiation facility BESSY II, with a time resolution of 500 μs. Due to the ultrafast measurements, we are able to follow adsorption and desorption in situ at pressures of 2 × 10 mbar and temperatures up to 500 K. The data are consistently analyzed using a simple model in line with data obtained with conventional fast XPS at temperatures below 460 K. Technically, our new approach allows measurement on even shorter timescales, down to 20 μs. © 2013 AIP Publishing LLC.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Gleichweit, Christoph
Lehrstuhl für Physikalische Chemie II
Höfert, Oliver
Lehrstuhl für Physikalische Chemie II
Papp, Christian PD Dr.
Lehrstuhl für Physikalische Chemie II
Steinrück, Hans-Peter Prof. Dr.
Lehrstuhl für Physikalische Chemie II


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Forschungsbereiche

D Catalytic Materials
Exzellenz-Cluster Engineering of Advanced Materials


Zitierweisen

APA:
Höfert, O., Gleichweit, C., Steinrück, H.-P., & Papp, C. (2013). Ultrafast x-ray photoelectron spectroscopy in the microsecond time domain. Review of Scientific Instruments, 84(9). https://dx.doi.org/10.1063/1.4821496

MLA:
Höfert, Oliver, et al. "Ultrafast x-ray photoelectron spectroscopy in the microsecond time domain." Review of Scientific Instruments 84.9 (2013).

BibTeX: 

Zuletzt aktualisiert 2019-08-04 um 14:51