Photochemistry of atmospherically important free radicals: HO2

Amitabha Sinha; M. Lock; Rhett James Barnes; J. Coleman

doi:10.1117/12.220848

18 September 1995 Photochemistry of atmospherically important free radicals: HO₂

Amitabha Sinha, M. Lock, Rhett James Barnes, J. Coleman

Proceedings Volume 2548, Laser Techniques for State-Selected and State-to-State Chemistry III; (1995) https://doi.org/10.1117/12.220848
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

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.

Citation Download Citation

Amitabha Sinha, M. Lock, Rhett James Barnes, and 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); https://doi.org/10.1117/12.220848

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