Physical Review Letters
Observation of Significant Optical Gain in Inverted Atomic Hydrogen
R. Tkach, Herbert Mahr, C. I. Tang, P. L. Hartman
Abstract
should be replaced by "fast." On page 348, sec- ond column, line 9, 2mC~should be replaced by 2mm4~.On page 348, second column, line 2 of first complete paragraph, the equation should read B=Vg&V+(V)+VC(V)x Ve; two lines further down, "single values" should be replaced by "single valued, " and "the" deleted.