Fullerene-Encapsulated Atoms in the Light of Synchrotron Radiation

Authors

A. M. Müller, Institut für Atom-und Molekülphysik
S. Schippers, Institut für Atom-und Molekülphysik
D. Esteves, Lawrence Berkeley National Laboratory
M. Habibi, University of Nevada - Reno
R. A. Phaneuf, University of Nevada - RenoFollow
A. L. D. Kilcoyne, Lawrence Berkeley National LaboratoryFollow
A. Aguilar, Lawrence Berkeley National LaboratoryFollow
L. Dunsch, Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden

Date of this Version

2009

Citation

The Fourth International Symposium on Atomic Cluster Collisions (ISACC 2009)

Abstract

Mass-selected beams of endohedral fullerene Ce@C⁺₈₂ ions, of atomic Ce^q+ ions (q=2,3,4), and of empty fullerene-cage C⁺₈₂ ions were employed to study photoionization of fullerene-encapsulated and free cerium atoms. The Ce 4d inner-shell contributions to single and double ionization of the endohedral Ce@C⁺₈₂ fullerene have been extracted from the data and compared with expectations based on theory and the experiments with atomic Ce ions. Dramatic reduction and redistribution of the ionization contributions to Ce 4d photoabsorption is observed. More than half of the Ce 4d oscillator strength is apparently diverted to additional decay channels of the Ce@C⁺₈₂ complex.