Photodissociation Dynamics of H₂S⁺ via A²A₁ (0, 11, 0) State^†

Time-sliced velocity map ion imaging (VMI) experiments were performed to investigate the photodissociation of H₂S⁺ X²B₁ via the excitation to the A²A₁ (0, 11, 0) state. Experimental images of the S⁺ (⁴S_u) products were recorded near 349.60 nm for the K = 1 band, and near 344.30 nm for the K = 2 band. The derived product total kinetic energy release (TKER) spectra exhibit partially rotationally resolved structures corresponding to the H₂ (X¹\Sigma_\mathrmg^+) co-products. The observed product state and angular distributions both exhibit sensitive dependence on the photolysis wavelength at near 349.60 nm and 344.30 nm. These phenomena indicate the underlying rich dynamic details and the role of the rotational excitation of H₂S⁺.