Revivification of confinement resonances in the photoionization of A@ C60 endohedral atoms far above thresholds

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It is discovered theoretically that significant confinement resonances in an nl photoionization of a multielectron atom A encaged in carbon fullerenes A@ C60 may reappear and be strong at photon energies far exceeding the nl ionization threshold, as a general phenomenon. The reasons for this phenomenon are unraveled. The Ne2p photoionization of the endohedral anion Ne@ C 60 5- in the photon energy region of about a thousand eV above the 2p threshold is chosen as a case study. © 2009 The American Physical Society.

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Physical Review A - Atomic, Molecular, and Optical Physics

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