Dresden 2011 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 5: Photoionization I

A 5.5: Vortrag

Montag, 14. März 2011, 15:30–15:45, BAR 106

NO+ fluorescence in the visible spectral range after excitation of the 1s−12π2 resonances with synchrotron radiation — •Benjamin Kambs, André Knie, and Arno Ehresmann — Universität Kassel, Institut für Physik und Center for Interdisciplinary Nanostructure Science and Technology, Heinrich Plett Str. 40, 34132 Kassel, Germany

Fluorescence spectra after deexcitation of different vibrational levels of the NO+ A1Π-term have been measured with photon induced fluorescence spectroscopy (PIFS) in the spectral range of 420-480 nm.

The excitation was performed with synchrotron radiation from the UE56/2 PGM2 beamline at BESSY II in the energy range of 397-400 eV.

Intensities of fluorescence radiation have been measured horizontally and vertically with respect to the polarization vector of the exciting radiation. Therefore the angular distribution parameter β can be calculated. Its energy dependency was used to verify the influence of symmetry forbidden electronic state interference (ESI) on the population of the NO+ A1Π-term via symmetry different, resonant intermediate electronic states.

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