Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 122, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1846674
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The yield curves for photoions from Ce@C-82 are measured by using synchrotron radiation in the photon energy range from 90 to 160 eV. Parent Ce@C-82(z+) and fragment ions C-60(z+) and C-70(z+) are observed in a mass spectrum (z= 1 and 2). The yield curves for doubly charged ionic species exhibit broad resonance in the photon energy region of from 120 to 140 eV which is ascribed to the 4d --> 4f giant dipole resonance of the encapsulated Ce atom. The total photoabsorption cross section of Ce@C-82 was determined from partial photoionization cross sections for formation of the parent and fragment ions to be 5.3(-1.1)(+1.8) and 19.6(-3.9)(+6.5) Mb at photon energies of 110 and 130 eV, respectively. (C) 2005 American Institute of Physics.
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