We present the details of a theoretical method for calculating the wave-packet dynamics of a
Rydberg electron in a strong electric field. Results for Rb are presented, and are compared …

Closed-orbit theory was initially developed as a qualitative and quantitative tool to interpret
the dynamics of excited hydrogen in static external fields: the modulations in the …

The ionization rate of Rydberg lithium atoms in a static electric field is examined within
semiclassical theory which involves scattering effects off the core. By semiclassical analysis …

We present experimental level statistics of diamagnetic rubidium Rydberg spectra. For
different types of classical dynamics, significant changes in the corresponding nearest …

The S-matrix theory formulation of closed-orbit theory recently proposed by Granger and
Greene is extended to atoms in crossed electric and magnetic fields. We present a …

Evidence for scattering closed orbits for the Rydberg electron of the singly excited helium
atom in crossed electric and magnetic fields at constant scaled energy and constant scaled …

We report the first observation of the manifestation of exchange effects in recurrence spectra.
Using fast-atom–laser-beam scaled-energy spectroscopy, we have measured the Rydberg …

High-resolution spectra of complex atoms and molecules have been described efficiently in
the energy domain using quantum-defect methods. At the same time, the coarser …

We present scaled-energy spectra on helium Rydberg atoms in a static electric field.| M|= 1
states were studied in excitation from the 2 1 S 0 metastable state. Spectra were recorded for …

We study how the ionic core in a nonhydrogenic atom modifies the dynamics of a Rydberg
electron in the presence of a weak static external field. We show that such a system is …