Energy transfer of ethyl iodine studied by time-resolved photoelectron imaging

► The energy transfer from the higher Rydberg states to the B band is observed in ethyl iodine. ► Using 267 nm pulse to pump, the dissociated band A state is excited and the time constant is determined to be 57 fs. ► By two-photon absorption at 400 nm, the B band is excited and the lifetime of predissociation is determined to be 1.42 ps. ► Time-dependent PKE and time-resolved mass spectroscopy provide complementary information to each other.