Absolute frequencies of lasing transitions in nine CO<inf>2</inf>isotopic species

Abstract

New measurements of beat frequencies in lasers of CO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> isotopic species are combined with similar measurements by Petersen et al. and by ourselves, using more refined statistical techniques, to give high-accuracy values of absolute frequencies in the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">9-12 \mu</tex> m range.