Dynamics Resonances in Atomic States of Astrophysical Relevance

Abstract

Ionized geocosmic media parameters in a thermal and a subthermal range of energy have a number of unique features. The photoresonance plasma that is formed by optical excitation of the lowest excited (resonance) atomic states is one example of conversion of radiation energy into electrical one. Since spontaneous fluorescence of excited atoms is probabilistic, the description of the radiating quantized system evolution along with photons energy transfer in a cold atoms medium, should include elements of stochastic dynamics. Finally, the chaotic dynamics of a weakly bound Rydberg electron over a grid of the energy levels diagram of a quasi-molecular Rydberg complex provides an excitation migration of the electron forward to the ionization continuum. This work aims at discussing the specific features of the dynamic resonances formalism in the description of processes involving Rydberg states of an excited atom, including features in the fluorescence spectrum partially caused by the quantum defect control due to the presence of statistic electromagnetic fields

Strong enhancement of Penning ionisation in cold Rydberg gases II: Tom and Jerry pairs for alkali-metal atoms

“…Such expectations are well confirmed in the Li and Na atomic pairs (see table 3) as well as for s-f, s-g configurations of Rb atoms (see table 4). It is worth noting that the equality [36] for the onset of Förster resonances between quantum states belonging to the atomic 2 l d and 2 l d terms. Förster resonances play an important role in enhancing dipole blockade effects [37], which can be used for achieving entanglement of Rydberg states [4,9].…”

Dynamic Instability of Rydberg Atomic Complexes

“…[36], under the conditions of the FR, the processes of blocking microwave transitions between Rydberg levels of rubidium in (A** + A) quasimolecular complex were investigated (experiment). From the academic point of view, the RF influence on the spectra of the excited atoms is considered in [40] within the framework of a model one-electron atom with the Sommerfeld potential [41]…”

“…Since the widths of the nonlinear resonances δε, as shown in [43,52], are directly related to the probabilities of microwave transitions in the excited atom, the blocking of the latter means the blocking of the development of dynamic chaos. The possibility of "controlling" the development of global chaos in the Rydberg diatomic cluster, using the double Stark resonance (or FR) mechanism, was considered in [40,43]. Figure 13 shows the time dependence of the RE binding energy under conditions of the development of diffusional ionization of Rydberg states of the model Sommerfeld atom, which is under the influence of an external microwave field, for different values of the Sommerfeld parameter α (see Equation 5).…”