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Quantum chaos, statistical equilibrium and resonant radiative capture of electrons by multicharged ions: Au 24+

G. F. Gribakin·A. A. Gribakina·V. V. Flambaum
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Abstract

We show that the spectrum and eigenstates of open-shell multicharged atomic ions near the ionization threshold are chaotic, as a result of extremely high level densities of multiply excited electron states (1000 levels per eV in Au 24+) and a strong configuration mixing. This complexity enables one to use statistical methods to analyze the system. The orbital occupation numbers obey the Fermi-Dirac distribution, and temperature can be introduced. We show that radiative capture of electrons through the multielectron resonant states is strongly enhanced compared to the direct radiative recombination.

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G. F. Gribakin, A. A. Gribakina, V. V. Flambaum. 1998-08-19. Quantum chaos, statistical equilibrium and resonant radiative capture of electrons by multicharged ions: Au 24+. https://arxiv.org/abs/physics/9808025

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