Spectral properties of non-hydrogenic atoms in weak external fields

T. Jonckheere; B. Gremaud; D. Delande

doi:10.1103/physrevlett.81.2442

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Spectral properties of non-hydrogenic atoms in weak external fields

T. Jonckheere·B. Gremaud·D. Delande

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Abstract

We study how the ionic core in a non-hydrogenic atom modifies the dynamics of a Rydberg electron in the presence of a weak static external field. We show that such a system is neither regular nor chaotic: its energy levels display unusual statistical properties, intermediate between the standard Poisson and Random Matrix ones. The ionic core acts as a scatterer whose size is comparable to the de Broglie wavelength of the electron, inducing specific quantum effects.

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T. Jonckheere, B. Gremaud, D. Delande. 1998-09-02. Spectral properties of non-hydrogenic atoms in weak external fields. https://doi.org/10.1103/physrevlett.81.2442

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