Two-color pump-probe study and internal-energy dependence of Rydberg-state excitation in C60

M. Boyle, M. Hedén, C. P. Schulz, E. E.B. Campbell, I. V. Hertel

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Abstract

The Rydberg excitation state in isolated C60 was analyzed using time-resolved photoelectron spectroscopy in a femtosecond two-color pump-probe experiment. The relaxation time for electron-electron interaction was determined to be about 100 fs with the t1g(LUMO+1) orbital being considered to define the doorway state in a nonadiabatic multielectron excitation process. To address the role of vibrational motion directly, the dependence of the Rydberg signal on the temperature of C60 was also investigated. The results show that the internal energy stored in vibrational modes of the C60 at 770 K supported the excitation process very efficiently.

Original languageEnglish
Article number051201
Pages (from-to)051201-1-051201-4
JournalPhysical Review A
Volume70
Issue number5 A
DOIs
StatePublished - Nov 2004

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