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Using time dependent density functional theory (TDDFT) we examine the energy,angular and time-resolved photoelectron spectra (TRPES) of ethylene in apump-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 delayprovides us direct access to the dynamic evolution of the molecule's electroniclevels. Further, by including the nuclei's motion, we provide direct chemicalinsight into the chemical reactivity of ethylene. These results show howangular and energy resolved TRPES could be used to directly probe electron andnucleus dynamics in molecules.

Modelling the effect of nuclear motion on the attosecond time-resolved photoelectron spectra of ethylene