science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softcon 2022 Substance: oxygen dimer Other Names: O2-O2 Formula: O4 CAS-No.: Study: UV/Vis absorption bands of the collision complex O2-O2 Authors: K. Pfeilsticker, H. Bösch, C. Camy-Peyret, R. Fitzenberger, H. Harder, H. Osterkamp Title: First Atmospheric Profile Measurements of UV/Visible O4 Absorption Band Intensities: Implications for the Spectroscopy, and the Formation Enthalpy of the O2-O2 Dimer Journal/Source: Geophys. Res. Lett., 28, 4595-4598, (2001); https://doi.org/10.1029/2001GL013734 Data: table, diagram Energy/Wavelength range: 360 - 630 nm Resolution: Pathlength: Temperature: 203 - 250 K Temperature dependence: yes Pressure/Concentration: 40 - 500 hPa Phase: gas pH: Comments: Seven O4 absorption bands - centered at ~ 360.7, 380.2, 446.7, 477.1, 532.2, 577.2, and 630.0 nm - are investigated for atmospheric pressures (p) ranging from ~ 500 hPa to ~ 40 hPa and temperatures (T) ranging from 203 K to 250 K.