Abstract
The photoion yield curves for Dy@C 82 z+ ( z = 1 and 2) from Dy@C 82 are measured by using synchrotron radiation in the photon energy range from 24.5 to 39.5 eV. Correction has been made to compensate the effect of transient change of the density of Dy@C 82 in the interaction region, with the help of the yield curve of C 60 z+ produced from C 60 remaining as a trace impurity in the sample. The yield of Dy@C 82 + exhibits a gradually descending curve with a flat region at 30–33 eV, similarly to the yield curve of C 60 + from C 60. The total photoabsorption cross section of Dy@C 82 was evaluated to be (1.2 ± 0.4) × 10 −20 m 2 at the photon energy of 39.5 eV.
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