The photodissociation dynamics of oxalyl bromide is investigated near 265 and 234 nm using the velocity map ion imaging technique coupled with a state selective [2+1] resonance-enhanced multiphoton ionization scheme. The translational energy distribution and 2PJ, J = 3/2, 1/2 parameters of the Br atom formation process are extracted from two-dimensional ion images. The trimodal energy distribution of Br(2P3/2) atoms is attributed to the primary C–Br bond fission as well as the secondary dissociation of bromine-containing C2O2Br radicals produced from the primary Br and Br* pathways. The conclusions are confirmed by the recoil anisotropy and the distribution width corresponding to the individual components. The branching ratio Br(2P3/2)/Br(2P1/2) confirms the excitation energy dependence.
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Published in Zhurnal Prikladnoi Spektroskopii, Vol. 88, No. 4, pp. 556–562, July–August, 2021.
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Paul, D., Kim, H.K., Rahman, M.M. et al. The Dynamics of Br Formation from the Primary and Secondary C–Br Bond Dissociation of Oxalyl Bromide near 265 and 234 nm. J Appl Spectrosc 88, 737–743 (2021). https://doi.org/10.1007/s10812-021-01233-0
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DOI: https://doi.org/10.1007/s10812-021-01233-0