Fig. 2
From: Hydroxyl super rotors from vacuum ultraviolet photodissociation of water

Internal energy spectra of OH from H2O photodissociation. Internal energy spectra of the OH products from photodissociation of H2O at 117.5 nm (red) and 115.2 nm (black), obtained from H atom time-of-flight (TOF) spectra recorded with the detection axis parallel to the photolysis laser polarization. The sharp features can all be assigned to population of rovibrational states of OH(X) and OH(A). The OH(X) bond dissociation energy, D0(O–H), is also indicated