Photoionization/fragmentation of endohedral fullerenes

S. Suzuki, Y. Kojima, H. Shiromaru, Y. Achiba, T. Wakabayashi, R. Tellgmann, E. E.B. Campbell, I. V. Hertel

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15 Scopus citations


Photoionization/fragmentation of endohedral fullerenes was investigated by use of laser-desorption time-of-flight (LD-TOF) mass spectroscopy. The velocity distribution of the parent ion (LaC82+) was found to be bimodal, as has previously been shown for laser desorbed C+60. The fragment ions have velocity distributions corresponding predominantly to the fast parent ion distribution. The LD-TOF mass spectra taken with a relatively low laser fluence were independent of the delay time of the extraction pulse, showing only a monotonically decreasing pattern of LaC2n+ (as n decreased). However, with higher laser fluence, it was shown that the mass distributions drastically changed from the monotonically decreasing pattern to that of C2n+ and LaC+2n with magic numbers. Based on these findings, a plausible photoionization/fragmentation mechanism is presented and discussed.

Original languageEnglish
Pages (from-to)410-413
Number of pages4
JournalZeitschrift für Physik D Atoms, Molecules and Clusters
Issue number1
StatePublished - 1997


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