Angular distributions of electrons basic solid state physics emitted from free and deposited Na₈ clusters

We explore from a theoretical perspective angular distributions of electrons emitted from a Na8 cluster after excitation by a short laser pulse. The tool of the study is time-dependent density-functional theory (TDDFT) at the level of the localdensity approximation (LDA) augmented by a self-interaction correction (SIC) to put emission properties in order. We consider free Na₈ and Na₈ deposited on the surfaces MgO(001) or Ar(001). For the case of free Na8, we distinguish between a hypothetical situation of known cluster orientation and a more realistic ensemble of orientations. We also consider the angular distributions for emission from separate single-electron levels.