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Photodissociation dynamics of methyl iodide probed using femtosecond extreme ultraviolet photoelectron spectroscopy†
Emily M. Warne,Briony Downes-Ward,Joanne Woodhouse,Michael A. Parkes,Emma Springate,Philip A. J. Pearcy,Yu Zhang,Gabriel Karras,Adam S. Wyatt,Richard T. Chapman,Russell S. Minns
Physical Chemistry Chemical Physics Pub Date : 10/26/2020 00:00:00 , DOI:10.1039/D0CP03478A
Abstract

Femtosecond pump–probe photoelectron spectroscopy measurements using an extreme ultraviolet probe have been made on the photodissociation dynamics of UV (269 nm) excited CH3I. The UV excitation leads to population of the 3Q0 state which rapidly dissociates. The dissociation is manifested as shifts in the measured photoelectron kinetic energy that map the extending C–I bond. The increased energy available in the XUV probe relative to a UV probe means the dynamics are followed over the chemically important region as far as C–I bond lengths of approximately 4 Å.

Graphical abstract: Photodissociation dynamics of methyl iodide probed using femtosecond extreme ultraviolet photoelectron spectroscopy
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