Direct observation of the picosecond dynamics of I2–Ar fragmentation

Picosecond real-time observations of the dynamics of I2–Ar fragmentation are reported. The state-to-state rates, k(νi′;νf′), are directly measured and related to the homogeneous broadening of the initial state, and to product state distributions in the exit channel. Comparisons with different theories of vibrational (and electronic) predissociation are made.