Broadening and shift coefficients of O2 absorption lines induced by self pressure in IR region

The molecular oxygen absorption spectra were recorded in the range of 7800 – 7990 cm–1 using a Bruker IFS 125 HR Fourier spectrometer. The spectra were recorded at a spectral resolution of 0.01 cm–1, a room temperature and an optical path length of 2880 cm for 5 values of oxygen pressure. The values of intensities, broadening and shift coefficients and parameters characterizing the dependence of broadening on the velocity of colliding molecules were determined for 55 O2 absorption lines broadened by self pressure. The measured parameters were compared with the values presented in the HITRAN database and literary sources.