Ultrafast photodissociation dynamics of n-butyl iodide in the A-band has been studied by femtosecond time-resolved mass spectroscopy coupled with ion imaging. The time constant of n-C4H9I in the A-band with one photon excitation at ∼267 nm is measured to be ∼(58±6) fs. The ion images of I (P3/2) and I ∗ (P1/2) at ∼267 nm and ∼274 nm are obtained and analyzed to yield corresponding speed and ang...
