Multiphoton processes photodissociation dynamics

First attempts to investigate the photodissociation dynamics of Fe(CO)5 used molecular beam technology coupled with high intensity femptosecond lasers [47, 48]. It is important to note that these experiments relied on multiphoton absorption to populate the electronic excited states of Fe(CO)5. This work built on the results of earlier experiments using nanosecond pulsed lasers which provided information on the photoproduct distribution and their energies [37-40, 49-56]. The energies of the various dissociation processes for Fe(CO)5 are presented in Fig. 18 for comparison with the excitation photon energies and the absorption profile of Fe(CO)5. 

The advancement of the application of lasers in combination with the molecular beam technique has made a great impact in the understanding of primary photodissociation processes. For state-specific detection of small fragments, laser-induced fluorescence, multiphoton ionization, and coherent laser scattering have provided extremely detailed information on the dynamics of photodissociation. Unfortunately, a large number of interesting... 

The first quantitative measurement of the distribution of excited atomic states produced in the multiphoton dissociation of a metal carbonyl has been made for Cr(CO)6. Photodissociation does not yield spin- or parity-differentiated states, rather the state distribution appears to be statistical. Photofragmentation dynamics of Cr(CO)6 in the gas phase have been measured and two channels of dissociation revealed. One of these is a rapid predissociation (efficiency 36%) and the other a slow process (efficiency... 

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