%0 Journal Article
%A Rubio-Lago, Luis
%A Rodríguez. Javier
%A García-Vela, Alberto
%A González, María
%A Amaral, Gabriel
%A Bañares Morcillo, Luis
%T A slice imaging and multisurface wave packet study of the photodissociation of CH3I at 304 nm
%D 2011
%@ 1463-9076
%U https://hdl.handle.net/20.500.14352/92763
%X The role of the conical intersection between the 1Q1 and 3Q0 excited states in the photodissociation of CH3I at 304 nm is investigated drawing a comparison between the adiabatic—through direct absorption to the 3Q1 state—and non-adiabatic—via the 1Q1 → 3Q0 conical intersection—production of I atoms in the ground 2P3/2 state. The versatility of the slice imaging technique in combination with resonance enhanced multiphoton ionization (REMPI) detection of I(2P3/2) atoms allow distinct measurements of the competing processes. The I(2P3/2) atom kinetic energy distributions (KEDs) obtained in both cases reflect inverted vibrational progressions of the ν2 umbrella mode of the CH3 co-product. The experimental results show a satisfactory agreement with multisurface wave packet calculations using a reduced dimensionality (pseudotriatomic) model carried out on the available ab initio potential energy surfaces
%~