18 September 1995 Photochemistry of atmospherically important free radicals: HO2
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OH photofragments generated from the 220 nm photolysis of HO2 are interrogated using laser induced fluorescence. Internal energy distribution measurement combined with Doppler line shape analysis confirm that the excited electronic state of HO2 accessed at 220 nm is of A' symmetry and that 85 plus or minus 10% of the oxygen atoms resulting from the photodissociation are formed in their 1D excited electronic state. Very little of the 23,200 cm-1 available energy (less than 2%) appears as internal excitation of the OH fragment.
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Amitabha Sinha, M. Lock, Rhett James Barnes, J. Coleman, "Photochemistry of atmospherically important free radicals: HO2", Proc. SPIE 2548, Laser Techniques for State-Selected and State-to-State Chemistry III, (18 September 1995); doi: 10.1117/12.220848; https://doi.org/10.1117/12.220848


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