The photoionization cross section of the fullerene ion C + 60 has been calculated within a single-electron approximation and also by using a consistent many-body theory accounting for many-electron correlations. Electronic wavefunctions of the ground and excited states have been determined within the jellium model based on the local density approximation. A giant resonance in the photoionization cross section at the photon energy ∼25 eV is predicted. It is demonstrated that the resonance profile is much higher and narrower than in the case of the neutral fullerene C 60 .
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Polozkov et al. (2005) studied this question.
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