Conditions are considered for the formation of a population inversion in a gas discharge in a two-gas mixture, the atoms of which have equal energy levels.
© 1962 Optical Society of America
Original Manuscript: September 21, 1961
Published: May 1, 1962
N. G. Basov and O. N. Krokhin, "Population Inversion in a Discharge in a Mixture of Two Gases," Appl. Opt. 1, 213-216 (1962)