Non-adiabatic transitions in the near-UV photodissociation of H3+

Urbain, Xavier;Dochain, Arnaud;Marion, Raphaël;Launoy, Thibaut;Loreau, Jérôme
(2019) Journal of Physics: Conference Series — Vol. 1412, n° 1, p. 102007 (2020)

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The near-UV photodissociation of H3+ has been studied in a fast beam experiment. The kinetic energy release and branching ratio among the fragmentation channels were obtained by three-dimensional imaging of the dissociation products. It is found that the photodissociation of vibrationally excited H3+ mostly produces vibrationally cold H2+ and hot H2. The non-adiabatic repopulation of the ground potential energy surface after excitation is accounted for by modelling the wavepacket dynamics on the intersecting potential energy surfaces.
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Urbain, X., Dochain, A., Marion, R., Launoy, T., & Loreau, J. (2019). Non-adiabatic transitions in the near-UV photodissociation of H3+. Journal of Physics: Conference Series, 1412(1), 102007. https://doi.org/10.1088/1742-6596/1412/10/102007 (Original work published 2020)