Observation of level statistics and Heisenberg-time orbits in diamagnetic Rydberg spectra
Max-Planck-Institut für Quantenoptik and Sektion Physik
der Universität München, 85748 Garching, Germany
Accepted: 25 June 1998
We present experimental level statistics of diamagnetic rubidium Rydberg spectra. For different types of classical dynamics, significant changes in the corresponding nearest-neighbour spacing distributions are observed which converge to Wigner-like distributions in the chaotic case. Numerically predicted torus-hopping is identified. High spectral resolution allows for the observation of underlying long-period orbits in the Fourier-transformed excitation spectra which are displayed in a parameter-free way. Furthermore, a strong correlation between oscillator strength and level distributions is present.
PACS: 32.60.+i – Zeeman and Stark effects / 03.65.Sq – Semiclassical theories and applications / 05.45.+b – Theory and models of chaotic systems
© EDP Sciences, 1998