Abstract
The photon energy hν dependences of angle-resolved ultraviolet photoelectron spectra of C 60 were measured in the range of hν = 20–120 eV. They exhibited the same intensity oscillations as reported previously, and were compared with the calculated results. In the calculation we used the single-scattering approximation for the final state with the result of the STO-5G molecular orbital calculation for the initial state. The calculated hν dependences for the HOMO and NHOMO states agreed well with the measured results. This indicated that the oscillations originate from the interference of photoelectron waves emanating from the 60 carbon atoms. Farther, the analytical calculation with the simplified initial state revealed that the spherical shell like molecular structure of C 60 with its large radius is the essential factor for the oscillations.
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