science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: hydroperoxyl radical Other names: Formula: HO2 CAS-No.: 3170-83-0 Study: uv absorption spectrum Authors: J.N. Crowley, F.G. Simon, J.P. Burrows, G.K. Moortgat, M.E. Jenkin, R.A. Cox Title: The HO2 radical UV absorption spectrum measured by molecular modulation, UV/diode-array spectroscopy Journal/Source: J. Photochem. Photobiol. A: Chem., 60, 1-10, (1991); http://dx.doi.org/10.1016/1010-6030(91)90001-A Data: table, diagram Energy/Wavelength range: 190 - 260 nm Resolution: Temperature: 298 K Temperature dependence: no Pressure/Concentration: Phase: gas pH: Comments: Experiments were carried out at both the Max-Planck-Institut (Mainz) and AEA Technology (Harwell), allowing two separate determinations of the HO2 UV absorption spectrum. These are in excellent agreement throughout the wavelength range 200-260 nm, with sigma220(HO2) = 3.4 × 10-18 cm2 molecule-1. Author to whom correspondence should be addressed: (e-mail address):