Abstract
We present a semiclassical analysis of the dynamics of Rydberg states of atomic hydrogen driven by a resonant microwave field of linear polarization. The semiclassical quasienergies of the atom in the field are found to be in very good agreement with the exact quantum solutions. The ionization rates of individual eigenstates of the atom dressed by the field reflect their quasiclassical dynamics along classical periodic orbits in the near integrable regime, but exhibit a transition to nonspecific rates when global chaos takes over in phase space. We concentrate both on the principal resonance where the unperturbed Kepler frequency \(\)is equal to the driving field frequency \(\) and on the higher primary resonance \(\) The latter case allows for the construction of nondispersive wave packets which propagate along Kepler ellipses of intermediate eccentricity.
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Schedule a callMore From: The European Physical Journal D - Atomic, Molecular and Optical Physics
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