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DPG

Berlin 2014 – scientific programme

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A: Fachverband Atomphysik

A 51: Interaction with VUV and X-ray light III

A 51.3: Talk

Friday, March 21, 2014, 11:00–11:15, BEBEL E42

Lyman emission after Core Excitation of Water vapor — •LTAIEF BEN LTAIEF, ANDREAS HANS, PHILIPP SCHMIDT, PHILIPP REISS, ANDRE KNIE, and ARNO EHRESMANN — Institut für Physik and Center for Interdisciplinary Nanostructure Science and Technology, Universität Kassel, Heinrich-Plett Sraße 40, D-34132 Kassel, Germany

The deexcitation channels of neutral hydrogen atoms after core excitation of gaseous water molecules by synchrotron radiation were studied using dispersed VUV fluorescence spectroscopy. The ionization yield and the intensity of several Lyman emission lines were measured as a function of exciting photon energy in the region of O1s excitations of water (532 eV - 542 eV). The population of the Lyman series (n≥3 as initial state) mirrors the excitation of different Rydberg states in the molecule.

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