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Published on: March 30, 2017
Landau quantization and time dependence in the ionization of cold, strongly magnetized Rydberg atoms
J-H Choi1, J R Guest, E Hansis
1FOCUS Center, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA.
Abstract:
The electric-field-ionization and autoionization behavior of cold Rydberg atoms of 85Rb in magnetic fields up to 6 T is investigated. Multiple ionization potentials and field-ionization bands reflecting the Landau energy quantization of the quasifree Rydberg electron are observed. The time-resolved and state-selective field-ionization study provides evidence of mixing and spin flips of the Rydberg electron. Spin-orbit coupling combined with mixing gives rise to a Feshbach-type autoionization of metastable positive-energy atoms.
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