Abstract

The production of high-mass cluster ions of carbon is reported. Using laser vaporization of graphite and time-of-flight mass spectrometric detection, carbon cluster ions, C+n, with n as large as 110, are observed. The cluster ion distribution is similar to that observed for neutral carbon clusters entrained in a supersonic molecular beam and photoionized. Comparisons between the observed cluster ions and the neutral clusters that are generated directly from laser vaporization are made. Results of these experiments are compared with the cluster distributions measured using other methods.

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