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Two colour pump-probe study and internal energy dependence of Rydberg state excitation

Journal article
Authors Mark Boyle
Martin Hedén
C.P. Schulz
Eleanor E B Campbell
Ingolf Hertel
Published in Physical Review A
Volume 70
Pages 051201
ISSN 1050-2947
Publication year 2004
Published at Department of Physics (GU)
Pages 051201
Language en
Keywords fullerene spectroscopy
Subject categories Atom and Molecular Physics and Optics


Excitation of Rydberg states in isolated C60 is studied by time-resolved photoelectron spectroscopy in a femtosecond two-color pump-probe experiment. The relaxation time for electron-electron interaction is determined to be approximately 100 fs with the t1g(LUMO + 1) orbital being considered to define the doorway state in a nonadiabatic multielectron excitation process. The internal energy stored in vibrational modes of the C60 at 770 K is found to support the excitation process very efficiently while in "cold" C60 (80 K), no significant Rydberg population is detected.

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