Cover Picture: Velocity of a Molecule Evaporated from a Water Nanodroplet: Maxwell–Boltzmann Statistics versus Non‐Ergodic Events (Angew. Chem. Int. Ed. 49/2015)
Résumé
The velocity distribution of water molecules evaporated from a mass-selected protonated water nanodroplet after a collision-induced electronic excitation is reported. In their Communication (DOI: 10.1002/anie.201505890), M. Farizon et al. show that besides the Maxwell–Boltzmann statistics behavior, a distinct high-velocity contribution provides evidence for molecular evaporation before complete energy redistribution, corresponding to non-ergodic events.