In the Jellium model, the electron density and the interaction between electrons and positive charges are assumed to be evenly distributed in space. This model is used to study metal clusters. Under this model, metal clusters treated as "giant atoms", and electron energy levels interacting with the spheroid charge distribution correspond to super shells where the resulting magic numbers are 2, 8,18, 20, 32, 40. The super shell configurations are depicted as capital letters (1S2, 1P6, 1D10, 2S2, 1F14, 2P6, etc.) to distinguish from the electronic shells of individual atoms.
