Fourier transform spectroscopy of the O-2 Herzberg bands - II. Band oscillator strengths and transition moments

From absorption spectra obtained at high resolution by coupling a Fourier t ransform spectrometer to a long-path multiple reflection cell [A. Jenouvrie r, M.-F. Merienne, B. Coquart, M. Carleer, S. Fally, A. C. Vandaele, C. Her mans, and R. Colin, J. Mol Spectrosc. 198, 136-162 (1999)] the intensities of the O-2 Herzberg bands (A(3)Sigma(u)(+)-X(3)Sigma(g)(-), c(1)Sigma(u)(-) - X(3)Sigma(g)(-), A'(3)Delta(u)-X(3)Sigma(g)(-)) have been studied at ambi ent temperature. The integrated cross section values are given for the line s of the (v'-0) bands in the A(3)Sigma(u)(+)-X(3)Sigma(g)(-), c(1)Sigma(u)( -)-X(3)Sigma(g)(-), and A' (3)Delta(u)-X(3)Sigma(g)(-), transitions with v' = 0-11, v' = 2-19, and v' = 2-12, respectively. The band oscillator streng ths have been deduced and transition moments have been calculated. The tota l absorption values in the region of the Herzberg bands together with the p hotoabsorption values determined previously above the dissociation limit ca n be modeled by a single curve, in agreement with the continuity relationsh ip of the cross sections through the dissociation limit. (C) 2000 Academic Press.