Contrasting single to double-particle transition probabilities induced by a one-particle perturbation yields information on the strength of (two-particle) correlation in a system. In this contribution we present the first calculations for the single and double ionization probabilities for a C₆₀ molecule upon the absorption of a single photon. The treatment is based on the Hartree-Fock and the frozen-core approximations for single-particle states and on the random-phase approximation for dealing with the screened Coulomb interaction. Energy and angular dependencies of total and differential cross sections are analyzed and the signature of the geometry of the fullerene and its charge-density response are pointed out. Furthermore, a scheme is presented for the evaluation of photo-induced many electron emission [1].
[1] O. Kidun, N. Fominykh, J. Berakdar, J.Phys.B 37 L321-L328 (2004).