Statistical properties of inter-series mixing in helium: from integrability to chaos.

Abstract

The photoionization spectrum of helium shows considerable complexity close to the double-ionization threshold. By analyzing the results from both our recent experiments and ab initio three- and one-dimensional calculations, we show that the statistical properties of the spacings between neighboring energy levels clearly display a transition towards quantum chaos.

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Cite this paper

@article{Pttner2001StatisticalPO, title={Statistical properties of inter-series mixing in helium: from integrability to chaos.}, author={Ralph P{\"{u}ttner and Beno{\^i}t Gr{\'e}maud and Dominique Delande and Michael Domke and Michael Martins and Alfred S. Schlachter and G{\"{u}nter Kaindl}, journal={Physical review letters}, year={2001}, volume={86 17}, pages={3747-50} }