Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume 43, Issue 16, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/43/16/165103
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Funding
- European Community [PIIF-GA-2008-219224]
- Deutsche Forschungsgemeinschaft (DFG) [EH 187/16-1]
- Bundesministerium fur Bildung und Forschung (BMBF) [05KS7RK1, 05 ES3XBA/5]
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Angular distributions of Auger electrons and subsequent fluorescence photons are studied theoretically and experimentally in the vicinity of the core excitations of NO. In the calculations, lifetime vibrational interference and electronic state interference were taken into account ab initio. The interference between excitation and deexcitation amplitudes for transitions via symmetry-different intermediate resonances 1s(-1)2 pi(2)((2)Delta, (2)Sigma(+/-)), which is forbidden in the solid-angle-averaged or magic-angle-recorded decay spectra, plays a crucial role in the formation of the angularly resolved decay spectra. Experimentally, angular distribution parameters for the NO(+)(A(1)Pi -> X(1)Sigma(+)) fluorescence induced by linearly polarized synchrotron radiation are determined in the vicinity of the N*O resonance in the Raman regime for core excitation. Theoretical results are in good agreement with the present experimental fluorescence spectra and with the available vibrationally and angularly resolved resonant Auger electron spectra.
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