Photodissociation Spectroscopy and Photofragment Imaging of the Mg(Benzene) Complex.

Tunable laser photodissociation spectroscopy and photofragment imaging experiments are employed to investigate the spectroscopy and dissociation dynamics of the Mg(benzene) ion-molecule complex. When excited with ultraviolet radiation, Mg(benzene) photodissociates efficiently, producing both Mg and benzene fragments, with branching ratios depending on the wavelength. The wavelength dependence of these processes are similar, with intense resonances at 330 and 241 nm and weaker features at 290 and 258 nm.

Photodissociation Spectroscopy and Photofragment Imaging to Probe Fe(Benzene) Dissociation Energies.

Tunable laser photodissociation spectroscopy measurements and photofragment imaging experiments are employed to investigate the dissociation energy of the Fe(benzene) ion-molecule complex. Additional spectroscopy measurements determine the dissociation energy of Fe(benzene). The dissociation energies for Fe(benzene) determined from the threshold for the appearance of the Fe fragment (48.

Photodissociation Spectroscopy and Photofragment Imaging of the Fe(Acetylene) Complex.

Tunable laser photodissociation spectroscopy in the 700-400 nm region and photofragment imaging experiments are employed to investigate the Fe(acetylene) ion-molecule complex. At energies above a threshold at 679 nm, continuous dissociation is detected throughout the visible wavelength region, with regions of broad structure. Comparison to the spectrum predicted by time-dependent density functional theory (TD-DFT) indicates that the complex has a quartet ground state.

Photofragment Imaging of Carbon Cluster Cations: Explosive Ring Rupture.

Carbon cluster cations (C) produced by laser vaporization are mass selected and photodissociated at 355 nm. Multiphoton dissociation of smaller ions leads to the elimination of neutral C, as in previous work, whereas larger clusters exhibit more varied fragmentation channels. Photofragment velocity-map imaging detects significant kinetic energy release (KER) in the various - 3 cation fragments.