Absorption measurements of oxygen between 330 and 1140 nm

The absorption spectrum of O₂ and O₂-O₂ collision pairs were measured over the wavelength range from 330 to 1140 nm using pressures of O₂ from 1 to 55 atm at 298 K. Absorption cross sections, pressure dependences, band centers, and full widths at half maximum of the observed absorption bands centered at 343.4, 360.5, 380.2, 446.7, 477.3, 532.2, 577.2, 630.0, 688, 762, and 1065.2 nm are reported. The absorption bands centered at 360.5, 380.2, and 477.3 nm were also measured at 196 K and their temperature dependences were characterized. -Authors