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Issue 22, 2016
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Vacuum ultraviolet photodissociation of hydrogen bromide

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Photodissociation dynamics of HBr at a series of photolysis wavelengths in the range of 123.90–125.90 nm and at around 137.0 nm have been studied using the H atom Rydberg “tagging” time-of-flight technique. The branching fractions between the channels forming ground Br(2P3/2) and spin–orbit excited Br(2P1/2) atoms together with the angular distributions of the products corresponding to these two channels have been measured. The photolysis wavelengths in this work excited the HBr molecule from the ground state X 1Σ+ to various Rydberg states and the V 1Σ+ ion-pair valence state. Predissociation via these states displays rich behavior, indicating the influence of the nature of initially excited states and the coupling to other bound or repulsive states on the predissociation dynamics.

Graphical abstract: Vacuum ultraviolet photodissociation of hydrogen bromide

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Publication details

The article was received on 24 Mar 2016, accepted on 06 May 2016 and first published on 06 May 2016

Article type: Paper
DOI: 10.1039/C6CP01956K
Phys. Chem. Chem. Phys., 2016,18, 15399-15405

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    Vacuum ultraviolet photodissociation of hydrogen bromide

    S. Su, Y. Dorenkamp, S. Yu, A. M. Wodtke, D. Dai, K. Yuan and X. Yang, Phys. Chem. Chem. Phys., 2016, 18, 15399
    DOI: 10.1039/C6CP01956K

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