AGe

Using TR-2PPE spectroscopy, direct evidence is provided that excited states of sp-metal clusters can live longer than one nanosecond. For Au3, in addition, the high time resolution in the present work allows us to monitor the wave-femtosecond laser opened insights into the dynam-the numbers of the unoccupied electronic levels within the excitation energies are large enough to ensure the fast Auger-like electron–electron scat-tering [16]. In contrast to the d-metal clusters, the seconds or even longer) for the excited states, which Au by optical excitations is an evidence for a long decay time ofAu3 [22].Yet, the relaxationdynamics of the sp-metal clusters have been rarely monitored using TR-2PPE spectroscopy with a sufficiently high time resolution. It is important to mention that the relaxation *ics of the chemical reactions and optically excite