Abstract:
We present results on the ultrafast dynamics of mass-selected neutral Ag4 clusters using NeNePo (negative ion - neutral - positive ion) femtosecond pump-probe spectroscopy. One-color pump-probe spectra of the Ag4 -/Ag4/Ag4 + system measured at 385 nm and an internal cluster temperature of 20 K display a complex beat structure over more than 60 ps. The oscillatory structure is attributed to vibrational wave packet dynamics in an excited “dark" state of neutral Ag4. A dominant 740 fs wave packet period as well as wave packet dephasing and rephasing are observed in the spectra. Fourier analysis of the spectra yields a group of frequencies centered around 45 cm-1 and an anharmonicity χ e2νχ eχ e of 2.65 cm-1 for the active vibrational mode.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received 30 November 2000
Rights and permissions
About this article
Cite this article
Hess, H., Asmis, K., Leisner, T. et al. Vibrational wave packet dynamics in the silver tetramer probed by NeNePo femtosecond pump-probe spectroscopy. Eur. Phys. J. D 16, 145–149 (2001). https://doi.org/10.1007/s100530170079
Issue Date:
DOI: https://doi.org/10.1007/s100530170079