Journal article
The interference effects in the alignment and orientation of the Kr II 4p⁴5p states following Kr I 3d⁹np resonance excitation
Publication Details
Authors: | Lagutin, B.; Petrov, I.; Sukhorukov, V.; Demekhin, P.; Zimmermann, B.; Mickat, S.; Kammer, S.; Schartner, K.; Ehresmann, A.; Shutov, Y.; Schmoranzer, H. |
Publication year: | 2003 |
Journal: | Journal of Physics B: Atomic, Molecular and Optical Physics |
Pages range : | 3251-3268 |
Volume number: | 36 |
Issue number: | 15 |
ISSN: | 0953-4075 |
eISSN: | 1361-6455 |
DOI-Link der Erstveröffentlichung: |
Abstract
The energy dependence of the alignment parameter A20 for the Kr II 4p45p(E 1J1) states following excitation in the Raman regime with the exciting-photon energy passing through the Kr I 3d9np resonances was investigated theoretically and experimentally. Interference between the resonance and direct photoionization channels explains the dependence of A20 on the excitation energy. Experimentally, A20 was determined after the analysis of 5p-5s fluorescence decay of the 4p45p(E 1J1) states excited with monochromatized synchrotron radiation. The band pass of the synchrotron radiation was set to 10 meV which is smaller than the natural width of the 3d9np resonances (~83 meV). Additionally, a strong energy dependence was predicted for the orientation parameter O10 as well as for the angular distribution parameter of photoelectrons, βe, for several 4p45p(E 1J1) ionic states.
The energy dependence of the alignment parameter A20 for the Kr II 4p45p(E 1J1) states following excitation in the Raman regime with the exciting-photon energy passing through the Kr I 3d9np resonances was investigated theoretically and experimentally. Interference between the resonance and direct photoionization channels explains the dependence of A20 on the excitation energy. Experimentally, A20 was determined after the analysis of 5p-5s fluorescence decay of the 4p45p(E 1J1) states excited with monochromatized synchrotron radiation. The band pass of the synchrotron radiation was set to 10 meV which is smaller than the natural width of the 3d9np resonances (~83 meV). Additionally, a strong energy dependence was predicted for the orientation parameter O10 as well as for the angular distribution parameter of photoelectrons, βe, for several 4p45p(E 1J1) ionic states.
