Berlin 2005 – wissenschaftliches Programm
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O: Oberflächenphysik
O 15: Postersitzung (Adsorption an Oberfl
ächen, Epitaxie und Wachstum, Organische Dünnschichten, Oxide und Isolatoren, Rastersondentechniken, Zeitaufgelöste Spektroskopie, Methoden)
O 15.81: Poster
Freitag, 4. März 2005, 17:00–20:00, Poster TU D
A multichannel detection photoemission experiment — •Michael Helle, Martin Marczynski, Matthias Kalläne, Sönke Harm, Kai Rossnagel, and Lutz Kipp — Institut für Experimentelle und Angewandte Physik, Universität Kiel, D-24098, Germany
It is possible to reduce the data collection times of angle-resolved
photoelectron spectroscopy (ARPES) by means
of parallel detection of electron energy and angle by at least a factor of
ten. Parallel detection is implemented
by equipping a hemispherical analyzer which is rotatable about the sample
in
ultrahigh vacuum with a position and time
sensitive microchannel plate detector with delay-line readout (DLD:
delay-line
detector).
The construction and the characterization of a home-built hemispherical
analyzer with DLD from the Roentdek company will be
presented. First measurements of the layered transition metal
dichalcogenide
TiTe2 before and
after adsorption of potassium will be shown.
This work was supported by the BMBF proj. no. 05 KS1 FKB.