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DPG

Hannover 2010 – scientific programme

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A: Fachverband Atomphysik

A 11: Interaction with VUV and X-Ray Light I

A 11.3: Talk

Wednesday, March 10, 2010, 11:00–11:15, B 302

Measurement of the angular correlation function of photoelectrons and dispersed fluorescence photons on rare gas atoms after excitation with synchrotron radiation — •Andre Knie1, Rainer Hentges1, Markus Braune2, Markus Ilchen3, Ingo Holtkoetter4, Sascha Deinert3, Andre Meissner2, Sanja Korica2, Uwe Becker2, and Arno Ehresmann11Institute of Physics and CINSaT, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany — 2Fritz-Haber-Institut der MPG, 14195 Berlin — 3DESY, 22607 Hamburg — 4WWU Muenster, 48149 Muenster

For the first time an angle-resolving photoelectron spectrometer was used in coincidence with an angle-resolving dispersed fluorescence spectrometer. The experiment is equipped with five electron TOFs and - via a parabolic mirror - with a 0.5 m Wadsworth mount-like monochromator and was performed with synchrotron radiation from the UE 56/2 PGM1 beamline at BESSY II.

While the angle information of the electrons is collected traditionally, the fluorescence photons are reflected by a parabolic mirror. This mirror translates the angular information into position information within a parallel fluorescence light beam. After being dispersed it is possible to record wavelength selectively and angle resolved fluorescence in coincidence with angle resolved photoelectrons.

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