BAND OSCILLATOR-STRENGTHS OF THE HERZBERG-I BANDS OF O-2

Photoabsorption cross section measurements of the Herzberg I bands (A( 3) Sigma(u)(+)-X(3) Sigma(g)(-)) of O-2 have been made by Fourier tran sform spectrometry with a resolution of 0.06 cm(-1) in the wavelength region 240-270 nm. Precise band oscillator strengths of the (4,0)-(11, 0) bands are obtained by direct measurement, and for some of the stron g bands; they are significantly higher than the previous experimental values. The rotational line strengths and the branching ratios are als o presented for the same bands. The dissociation energy of O-2 is disc ussed. (C) 1995 American Institute of Physics.