Calculation of the parameters of cw lasing due to 2p–1s atomic transitions excited by discharges in pure rare gases

The parameters of cw lasing due to 2p₁–1s₄ transitions in Ne I and 3d₂–2p₂ transitions in Ar I are calculated for a positive low-pressure column as a function of the densities of electrons n_e and atoms n_a. Moreover, the parameters of an unrestricted nonequilibrium plasma—the electron temperature T_e and the densities n_e and n_a—ensuring cw lasing are calculated for these transitions and also for the 2p₈–1s₅ transition in the Kr atom.