Regensburg 2013 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 58: Poster Session III (Solid-liquid interfaces; Scanning probe and other methods; Electronic structure theory; Spin-orbit interaction)

O 58.59: Poster

Mittwoch, 13. März 2013, 18:15–21:45, Poster B1

Time of Flight X-Ray Photoelectron Spectroscopy — •Stephan Hannig¹, Ulf Berges^1,2, and Carsten Westphal^1,2 — ¹E1-TU Dortmund, Otto-Hahn-Straße 4, D-44227, Germany — ²DELTA-TU Dortmund, Maria-Goeppert-Mayer-Straße 2, D-44227, Germany

X-ray Photoelectron Spectroscopy (PES) reveals the electronic structure of surfaces by detecting the energy distribution of short mean-free path photo-emitted electrons. Conventional setups consist of a channeltron-detector attached to a concentric hemispherical analyzer. A disadvantage of this technique is the limited lifetime of the electron multiplier inside the detector. In addition to that, measurements are rather time-consuming if large angle scans have to be performed as in photoelectron diffraction experiments. Here we present the first tests of the applicability of a delay-line detector at the synchrotron DELTA and its performance. In the next step the setup will be compared to the existing conventional detector described above.