1. Extracting partial decay rates of helium from complex rotation: autoionizing resonances of the one-dimensional configurations
- Author
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Zimmermann, Klaus, Lugan, Pierre, Jörder, Felix, Heitz, Nicolai, Schmidt, Maximilian, Bouri, Celsus, Rodriguez, Alberto, and Buchleitner, Andreas
- Subjects
Physics - Atomic Physics - Abstract
Partial autoionization rates of doubly excited one-dimensional helium in the collinear Zee and eZe configuration are obtained by means of the complex rotation method. The approach presented here relies on a projection of back-rotated resonance wave functions onto singly ionized $\textrm{He}^{+}$ channel wave functions and the computation of the corresponding particle fluxes. In spite of the long-range nature of the Coulomb potential between the electrons and the nucleus, an asymptotic region where the fluxes are stationary is clearly observed. Low-lying doubly excited states are found to decay predomintantly into the nearest single-ionization continuum. This approach paves the way for a systematic analysis of the decay rates observed in higher-dimensional models, and of the role of electronic correlations and atomic structure in recent photoionization experiments.
- Published
- 2014
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