title: Communication: Dopant-induced solvation of alkalis in liquid helium nanodroplets.
abstract: Alkali metal atoms and small alkali clusters are classic heliophobes and when in contact with liquid helium they reside in a dimple on the surface. Here we show that alkalis can be induced to submerge into liquid helium when a highly polarizable co-solute, C60, is added to a helium nanodroplet. Evidence is presented that shows that all sodium clusters, and probably single Na atoms, enter the helium droplet in the presence of C60. Even clusters of cesium, an extreme heliophobe, dissolve in liquid helium when C60is added. The sole exception is atomic Cs, which remains at the surface.
authors.affiliation: Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria.
authors.forename: Michael
authors.initials: M
authors.lastname: Renzler
authors.affiliation: Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria.
authors.forename: Matthias
authors.initials: M
authors.lastname: Daxner
authors.affiliation: Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria.
authors.forename: Lorenz
authors.initials: L
authors.lastname: Kranabetter
authors.affiliation: Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria.
authors.forename: Alexander
authors.initials: A
authors.lastname: Kaiser
authors.affiliation: Institut für Experimentalphysik, Technische Universität Graz, Petergasse 16, A-8010 Graz, Austria.
authors.forename: Andreas W
authors.initials: AW
authors.lastname: Hauser
authors.affiliation: Institut für Experimentalphysik, Technische Universität Graz, Petergasse 16, A-8010 Graz, Austria.
authors.forename: Wolfgang E
authors.initials: WE
authors.lastname: Ernst
authors.affiliation: Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany.
authors.forename: Albrecht
authors.initials: A
authors.lastname: Lindinger
authors.affiliation: Institut für Theoretische Physik, Johannes Kepler Universität, A-4040 Linz, Austria.
authors.forename: Robert
authors.initials: R
authors.lastname: Zillich
authors.affiliation: Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria.
authors.forename: Paul
authors.initials: P
authors.lastname: Scheier
authors.affiliation: Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, United Kingdom.
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Ellis