Phys. Rev. Lett. 96, 023001 (2006) [4 pages]Experimental Evidence for Modulations in the Relative Double-Photoionization Cross Section of C60 from Threshold up to 280 eVReceived 30 September 2005; published 18 January 2006 The relative double-photoionization cross section of neutral C60 clusters was investigated using monochromatized synchrotron radiation between 18 and 283 eV. Our measurement of the double-to-single photoionization ratio reveals two modulating components that are superimposed on a smooth ratio curve from threshold (19.0 eV) up to 280 eV, when inner-shell excitations become possible. The maxima in the modulation can be related to geometrical dimensions of the C60 cluster. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.023001
DOI:
10.1103/PhysRevLett.96.023001
PACS:
61.48.+c, 33.80.Eh, 36.40.Cg
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