Microwave "ionization" of excited hydrogen atoms: frequency dependence in a resonance zone
Physics, State University of New York Stony Brook, NY 11794-3800 USA
2 Institute of Physics, Polish Academy of Sciences Al. Lotników 32/46, 02-668 Warszawa, Poland
Accepted: 4 December 1995
In the microwave "ionization" of excited 3d H atoms by a linearly polarized field, we observe experimentally for the first time a fine-scale frequency dependence that is suppressed when relatively weak broad-band noise is added to the driving field. We use 1d classical calculations, 1d quantal calculations and Husimi wave function distributions to give a semiclassical explanation for the delicate behavior.
PACS: 05.45.+b – Theory and models of chaotic systems / 03.65.Sq – Semiclassical theories and applications / 32.80.Rm – Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states)
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