The transition from direct to delayed ionisation of C 60 |
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| Authors: | E.E.B. Campbell K. Hoffmann I.V. Hertel |
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| Affiliation: | Department of Experimental Physics, G?teborg University and Chalmers University of Technology, SE-41296 G?teborg, Sweden, SE
Max-Born-Institut, Max-Born-Str. 2a, D-12489 Berlin, Germany, DE
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| Abstract: | The timescale for the coupling of electronic and vibrational excitation in isolated fullerenes is determined by recording positive ion time-of-flight mass spectra on excitation with ultrashort laser pulses at 790 nm of the same fluence but different pulse durations. The coupling leads to the onset of a delayed ionisation “tail” on the parent fullerene ion peak. This occurs for a pulse duration of 500-1000 fs, depending on laser fluence. Received 20 October 2000 |
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| Keywords: | PACS. 36.40.-c Atomic and molecular clusters |
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