Using time dependent density functional theory (TDDFT) we examine the energy,
angular and time-resolved photoelectron spectra (TRPES) of ethylene in a
pump-probe setup. To simulate TRPES we expose ethylene to an ultraviolet (UV)
femtosecond pump pulse, followed by a time delayed extreme ultraviolet (XUV)
probe pulse. Studying the photoemission spectra as a function of this delay
provides us direct access to the dynamic evolution of the molecule's electronic
levels. Further, by including the nuclei's motion, we provide direct chemical
insight into the chemical reactivity of ethylene. These results show how
angular and energy resolved TRPES could be used to directly probe electron and
nucleus dynamics in molecules.Comment: 9 pages, 6 figure
