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26 April 2024

» arxiv » 0907.2774

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High-resolution spectroscopy of triplet states of Rb2 by femtosecond pump-probe photoionization of doped helium nanodroplets
M. Mudrich ; Ph. Heister ; T. Hippler ; Ch. Giese ; O. Dulieu ; F. Stienkemeier ;
Date:	16 Jul 2009
Abstract:	The dynamics of vibrational wave packets in triplet states of rubidium dimers (Rb2) formed on helium nanodroplets are studied using femtosecond pump-probe photoionization spectroscopy. Due to fast desorption of the excited Rb2 molecules off the droplets and due to their low internal temperature, wave packet oscillations can be followed up to very long pump-probe delay times >1.5ns. In the first excited triplet state (1)^3Sigma_g^+, full and fractional revivals are observed with high contrast. Fourier analysis provides high-resolution vibrational spectra which are in excellent agreement with ab initio calculations.
Source:	arXiv, 0907.2774
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