Fig. 4
From: Hydroxyl super rotors from vacuum ultraviolet photodissociation of water
Potential energy surface contour plots of H2O. Contour plots of the \(\tilde B\) and \(\tilde X\) state potential energy surfaces (PESs) for the motion of H around OH with a fixed OH bond length of 1.07 Å. Energies are given in eV relative to the minimum of the ground state. The conical intersections (CIs) at the linear H−O−H and O−H−H geometries, where minima of the \(\tilde B\) state PESs are degenerate with maxima of the \(\tilde X\) state PES, are shown in red. The \(\tilde B\) and \(\tilde X\) state PESs correlate adiabatically with, respectively, H + OH(A) and H + OH(X) products. The dotted curves in the upper panel depict the dissociative flux through the two CIs, with a thicker pen thickness implying relatively larger yield. The inset panels show the “route 1” and “route 2” pathways through the respective CIs
