Hg 5d and 6s: Multichannel quantum-defect analysis of experimental data

Schäfers, F.; Heckenkamp, Ch.; Müller, M.; Radojević, V.; Heinzmann, Ulrich

doi:10.1103/PhysRevA.42.2603

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Hg 5d and 6s: Multichannel quantum-defect analysis of experimental data

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Müller, M.
Fritz Haber Institute, Max Planck Society;
Fakultät für Physik, Universität Bielefeld;

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Heinzmann, Ulrich
Fritz Haber Institute, Max Planck Society;
Fakultät für Physik, Universität Bielefeld;

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Citation

Schäfers, F., Heckenkamp, C., Müller, M., Radojević, V., & Heinzmann, U. (1990). Hg 5d and 6s: Multichannel quantum-defect analysis of experimental data. Physical Review A, 42(5), 2603-2613. doi:10.1103/PhysRevA.42.2603.

Cite as: https://hdl.handle.net/21.11116/0000-0007-1AD2-F

Abstract

Experimental spin-polarization data for the Hg 6s Cooper minimum and dipole-transition amplitudes and phase-shift differences for photoionization of the Hg 5d and 6s shells (eight channels) in the photon-energy region from the ²D_3/2 threshold up to 35 eV (kinetic energies from 0 to 20 eV) are presented and compared with new relativistic random-phase approximation calculations. The data were evaluated from an experimental data set, quantum mechanically ‘‘complete,’’ consisting of cross-section and photoelectron spin-polarization data. For the 5d subshells the results show strong interchannel coupling between the outgoing p and f continuum channels. The results for Hg 6s could be used for an independent determination of the photoelectron angular distribution parameter β in the Cooper-minimum region. This region is shown to be perturbed by numerous two-electron excitations, which might be a possible explanation for the controversy on its location.