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Periodic orbit theory for Rydberg atoms in external fields

Dando, P; Monteiro, TS; Owen, SM; (1998) Periodic orbit theory for Rydberg atoms in external fields. Physical Review Letters , 80 (13) 2797 - 2800. 10.1103/PhysRevLett.80.2797. Green open access

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Abstract

Although hydrogen in external fields is a paradigm for the application of periodic orbits and the Gutzwiller trace formula to a real system, the trace formula has never been applied successfully to other Rydberg atoms. We show that spectral fluctuations of general Rydberg atoms are given with remarkable precision by the addition of diffractive terms. Previously unknown features in atomic spectra are exposed: there are new modulations that are neither periodic orbits nor combinations of periodic orbits; “core shadowing” generally decreases primitive periodic orbit amplitudes but can also lead to increases.

Type: Article
Title: Periodic orbit theory for Rydberg atoms in external fields
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.80.2797
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.80.2797
Language: English
Additional information: © 1998 The American Physical Society
Keywords: Atoms, Closed classical orbits, Fields, Magnetic fields, Non-hydrogenic atoms, Photoabsorption cross-sections, Quantum spectra, Strong electric-field, theory
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/33313
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