Transient visible spectroscopy from (1)0u−, (1)1u and (1)0u+ states of Xe2∗ in the range 500–600 nm

Transient absorption spectroscopy in the region λ=500–600 nm on relaxed Xe2∗ excimers has been performed using the laser-reduced fluorescence technique. The observed transitions are assigned as originating from the (1)0u−/6s 3P2, (1)1u/6s 3P2 states and also from the (1)0u+/6s 3P1 state. The analysis and interpretation of the spectrum is carried out using specially developed pseudopotential calculations. Making use of the detailed assigment of the transitions with respect to both initial and final states, an experimental value for the (1)0u−–(1)0u+ energy separation at the excimer equilibrium distance is proposed in the range 417–440 cm−1.