constituents to respond to an electromagnetic pulse. Strong excitations lead to immediate ionization of the system, often with dramatic long-time effects as, e.g., dissociation or Coulomb explosion [@Saa06aR]. It implies electronic transport and possible indirect effects on neighboring species. A typical example of indirect effects is provided by Dissociative Electron Attachment (DEA) in biological systems [@Gar12] where electrons emitted somewhere else are attached to a target biological molecule which, in turn, leads to the break up of the latter. Emitted electrons may also provide valuable insight into reaction pathways when properly tracked. Typical examples are here PES and PAD. Moreover, Time-Resolved (TR) PES and PAD have been recorded in molecules [@Sei02] and more recently in clusters, [see e.g. [@Roh10].]{} Electrons are thus leading players at all stages of an excitation of a system subject to an external electromagnetic perturbation (i.e. an irradiation). They are the first to respond at short time scales and distribute then the excitation more or less quickly to other degrees of freedom. They are finally useful probes along the whole dynamical process, especially when emitted from the system and properly recorded.

Analyzing the characteristics of emission properties of clusters and molecules is thus at the core 