Formation and stimulated photodissociation of metastable molecules with emission of photon at the collision of two atoms in a laser radiation field

TL;DR

This paper investigates the formation and stimulated photodissociation of metastable molecules during atomic collisions in a laser field, focusing on resonance scattering and photon emission, with implications for excimer laser development.

Contribution

It introduces theoretical expressions for cross sections and emission intensity related to metastable molecule formation and stimulated emission in atomic collisions under laser radiation.

Findings

Derived formulas for elastic and inelastic resonance scattering cross sections.

Quantified stimulated emission intensity during molecular dissociation.

Analyzed conditions for excimer laser creation using metastable molecules.

Abstract

The Formation of metastable molecules (Feshbach resonances) at the collision of two atoms and subsequent stimulated transition to a lower unbound electronic molecular state, with emission of a photon of the laser radiation has been investigated. This can develop, in particular, for $Rb_2$ molecules due to resonance scattering of two $Rb$ atoms. The considered process is a basis for the creation of excimer lasers. Expressions for the cross sections of elastic and inelastic resonance scattering and the intensity of the stimulated emission of the photons have been obtained.