Feasibility of construction of a chemical laser utilizing the B→X electronic transition in the IF molecule

A model is proposed of chemical pumping of the B³П_0⁺ state of the IF molecules in F–H₂–NF₂– IF mixtures. This model is used in numerical calculations of the kinetics of the relevant reactions. It is shown that the B→X transition in IF can ensure a high small-signal gain which should be sufficient for lasing. The processes which limit the rate of pumping of the upper active level are identified. Methods for removing such limitations are suggested.