Zimmermann, Klaus
Lugan, Pierre
Joerder, Felix
Heitz, Nicolai
Schmidt, Maximilian
Bouri, Celsus
Rodriguez, Alberto
Buchleitner, Andreas
Extracting partial decay rates of helium from complex rotation: autoionizing resonances of the one-dimensional configurations
Journal Of Physics B-Atomic Molecular And Optical Physics
Journal Of Physics B-Atomic Molecular And Optical Physics
Journal Of Physics B-Atomic Molecular And Optical Physics
Journal Of Physics B-Atomic Molecular And Optical Physics
18
48
2
partial rates
complex rotation
helium
2015
2015
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 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.
Iop Publishing Ltd
0953-4075
Journal Of Physics B-Atomic Molecular And Optical Physics
Journal Articles
10.1088/0953-4075/48/2/025001