Real-time observation of ultrafast ionization and fragmentation of mercury clusters
We report on time-resolved multiphoton ionization and fragmentation dynamics of free Hg n clusters (n ≤ 110) with femtosecond laser pulses. Already at laser intensities of 1011 W/cm2 we observe prompt formation of singly, doubly, and triply charged Hgn clusters. In pump-probe experiments short-time (0–5 ps) oscillatory modulations of the transient Hg n + , and Hg n 2+ signals are observed which indicate an intermediate state dynamics common to all observed cluster sizes and charge states. Long-time (0–200 ps) transient ionization signals show caged dissociation and recombination chromophore dynamics.
PACS33.80.Rv Multiphoton ionization and excitation to highly excited states 36.40.Qv Stability and fragmentation of clusters
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- 2.C. Bréchignac, M. Broyer, P. Cahuzac, G. Delacretaz, Poi9L8a8b)astie, J.P. Wolf, L. Wöste: Phys. Rev, Lett. 60, 275Google Scholar
- 5.H. Haberland, B. v. Issendorff, J. Yufeng, T. Kolar, G. Tanner: Z. Phys. D 26, 8 (1993)Google Scholar
- 15.Note that a comparison of Hg and H4,;,,F, i.e. peaks of the same ratio elm is not possible in a TOE mass-spectrometer. Since the species Hg and Hg,1 or Hg+ and Hg1 display essentially the same dynamics we draw our conclusion from the comparison for instance of H9.-,:1 and Hg2 1 instead of Hei and HgLP Google Scholar
- 19.B. Besc6s, B. Lang, G. Gerber: to be publishedGoogle Scholar