Physics – Atomic and Molecular Clusters
Scientific paper
2009-02-26
J. Chem. Phys. 131, 044319 (2009)
Physics
Atomic and Molecular Clusters
Scientific paper
10.1063/1.3180819
We systematically investigate the formation and stability of snowballs formed by femtosecond photo-ionization of small alkali clusters bound to helium nanodroplets. For all studied alkali species Ak=(Na, K, Rb, Cs) we observe the formation of snowballs (AkHe_N)^+ when multiply doping the droplets. Fragmentation of clusters Ak_N upon ionization appears to enhance snowball formation. In the case of Na and Cs we also detect snowballs (Ak_2He_N)^+ formed around Ak dimer ions. While the snowball progression for Na and K is limited to less than 11 helium atoms, the heavier atoms Rb and Cs feature wide distributions at least up to (AkHe_41)^+. Characteristic steps in the mass spectra of Cs-doped helium droplets are found at positions consistent with predictions on the closure of the 1st shell of helium atoms around the Ak^+ ion based on variational Monte Carlo simulations.
Mudrich Marcel
Müller Samuel
Stienkemeier Frank
No associations
LandOfFree
Alkali-helium snowball complexes formed on helium nanodroplets does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Alkali-helium snowball complexes formed on helium nanodroplets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alkali-helium snowball complexes formed on helium nanodroplets will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-571255