Photoionization and fragmentation dynamics of C60

H. Hohmann, C. Callegari, S. Furrer, D. Grosenick, E. E.B. Campbell, I. V. Hertel

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Photoionization of C60 by 15 ns laser pulses at 193 and 308 nm and by ca. 100 fs pulses at 310 and 620 nm has been studied with reflectron time-of-flight mass spectrometry. The initial fragmentation process is seen to be the ejection of Cn, n>2, as opposed to successive C2 evaporation. The fragment ions produced in this initial fragmentation step have sufficient internal energy to cool, by the emission of a C2 molecule in the field-free region of the mass spectrometer. Pump-probe experiments with 90 fs laser pulses at 620 nm give additional insights into the ionization mechanism.

Original languageEnglish
Pages (from-to)1919-1922
Number of pages4
JournalPhysical Review Letters
Issue number14
StatePublished - 1994


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