Classical ionization for the aperiodic driven hydrogen atom

The classical ionization rate, for 1D hydrogen atom under intense field, was obtained for several almost-periodic (with different degrees of randomness) and random possibilities for the electric field amplitude; it was observed that the less effective is the ionization due to an amplitude sequence for weak intensity, the more effective it is for strong fields. Most numerical calculations were performed with simple adaptations of the Kepler map, which were supported by Hamiltonian calculations.