Identification of an ultrafast internal conversion pathway of pyrazine by time-resolved vacuum ultraviolet photoelectron spectrum simulations

Manabu Kanno, Benoît Mignolet, Françoise Remacle +1

The internal conversion from the optically bright S${}_2$ (${}^1$B${}_{2\mathrm{u}}$, $\pi {\pi }^{\ast }$) state to the dark S${}_1$ (${}^1$B${}_{3\mathrm{u}}$, n${\pi }^{\ast }$) state in pyrazine is a standard benc…