Spin-orbit branching in the photodissociation of HF and DF: II. A time-dependent wavepacket study of vibrationally mediated photodissociation

Abstract

The vibrationally mediated photodissociation dynamics of HF and DF, following A¹P <-- X¹S⁺ electronic excitation, are examined using time-dependent wavepacket techniques. Predictions of the branching fraction for the formation of excited state fluorine, F(²P_1/2), are made for a wide range of excitation energies and for the initial vibrational states v = 1, 2, and 3. The preceding article (Publication [6]) discusses the underlying theory and presents results for photodissociation from the ground vibrational state (v = 0). The calculated branching fraction for HF photodissociation from the v = 3 vibrational state agrees well with the value of 0.42 ± 0.03 measured experimentally at 193.3 nm by Zhang et al. [J. Chem. Phys. 104, 7027 (1996)]. The results are discussed in context with the corresponding results for HCl and DCl.

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