Heidelberg 2015 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 28: Poster: Interaction with VUV and X-ray light II

A 28.8: Poster

Mittwoch, 25. März 2015, 17:00–19:00, C/Foyer

Measuring Molecular (Recoil) Frame-Photoelectron Angular Distribution of Halogenated Carbon Compounds. — •Evgeny Savelyev1,2, Cédric Bomme1, Rajesh Kushuwaha3, Timur Osipov4, Hui Xiong5, Nora Berrah5, and Daniel Rolles1,31Deutsches Elektronen-Synchrotron — 2Georg-August-Universität Göttingen — 3Kansas State University — 4SLAC National Accelerator Laboratory — 5University of Connecticut

We investigated Recoil Frame - Photoelectron Angular Distribution(RF-PADs) of halogenated hydrocarbons such as CH3I, CF3I, and 2,6-Difluoroiodobenzene molecules using a double-sided Velocity Map Imaging Spectrometer at beamline 10.0.1 of the Advanced Light Source (ALS) and at the FLASH Free Electron Laser. At the ALS, the RF-PADs were measured using a photoelectron-ion coincidence technique, while adiabatic laser alignment was used at FLASH in order to fix the molecular axis in the laboratory frame. Both experiments were performed approximately 50eV above the iodine 4d photoionization threshold (i.e. at 107 eV photon energy). The results as well as a comparison and discussion of these two measurements are presented on this poster.

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DPG-Physik > DPG-Verhandlungen > 2015 > Heidelberg