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Kinetics of the active media of nuclear-pumped lasers based on transitions in carbon and nitrogen atoms

The first detailed time-dependent kinetic model of a nuclear-pumped laser is developed for transitions in carbon and nitrogen atoms present in Ne—Ar— N2—CO— H2— O2 mixtures. Numerical simulation is used to show that the main mechanism of pumping the upper active levels of carbon and nitrogen atoms in Ne—CO— N2 mixtures is three-body recombination of atomic carbon and nitrogen ions. Dissociative recombination of an ArC+ ion becomes the main pumping channel when argon is added to a mixture. The optimal conditions and the ultimate laser output characteristics are identified. The calculated results are in satisfactory agreement with experimental data.