Analysis of metallofullerenes using a mass reflectron

A high-resolution mass reflectron has been used to analyze an extract of a fullerene mixture containing the metallofullerene Gd@C82. It is shown that various metallofullerenes can be analyzed by means of thermal desorption followed by electron impact ionization. The C60, C82, and Gd@C82 ion currents are obtained as functions of the evaporation temperature. Doubly charged (Gd@C82)2+ metallofullerene ions are identified in the mass spectra.

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