The Chemi-Ionization Processes in Slow Collisions of Rydberg Atoms with Ground State Atoms: Mechanism and Applications

Abstract

In this article the history and the current state of research of the chemiionization processes in atom-Rydberg atom collisions is presented. The principal assumptions of the model of such processes based on the dipole resonance mechanism, as well as the problems of stochastic ionization in atom-Rydberg atom collisions, are exposed. The properties of the collision kinetics in atom beams of various types used in contemporary experimentations are briefly described. Results of the calculation of the chemi-ionization rate coefficients are given and discussed for the range of the principal quantum number values 5 < n < 25. The role of the chemi-ionization processes in astrophysical and laboratory low-temperature plasmas, and the contemporary methods of their investigation are described. Also the directions of further research of chemi-ionization processes are discussed in this article.

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• Diffusive-like Redistribution in State-changing Collisions between Rydberg Atoms and Ground State Atoms
• Excitation and deexcitation processes in atom-Rydberg atom collisions in helium-rich white dwarf atmospheres
• The collisional atomic processes of Rydberg alkali atoms in Geo-cosmical plasmas
• Dynamics Resonances in Atomic States of Astrophysical Relevance
• Non-Elastic Processes in Atom Rydberg-Atom Collisions: Review of State of Art and Problems
• Anomalies in radiation-collisional kinetics of Rydberg atoms induced by the effects of dynamical chaos and the double Stark resonance