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

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

1998-08-19

arxiv.org/abs/physics/9808025v1

Physics

Atomic Physics

10 pages including 5 figures, REVTEX, submitted to PRL (July 1998)

Scientific paper

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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