Electronic states of solid ${\mathrm{C}}_{60}$: Symmetries and photoionization cross sections

Synchrotron-radiation photoemission studies of the occupied electronic states of condensed phase-pure ${\mathrm{C}}_{60}$ show sharp, well-defined features, and comparison with the calculated density of states shows excellent agreement. Studies of the emission intensities as a function of photon energy reveal remarkable modulation due to transitions to final states that retain distinct molecular character and symmetry to ∼100 eV above the highest occupied level.