title: Laser ionization and spectroscopy of Cu in superfluid helium nanodroplets.
abstract: Mass and optical spectroscopic methods are used for the analysis of copper (Cu) atoms and clusters doped to helium nanodroplets (HeN). A two-color resonant two-photon ionization scheme is applied to study the Cu2P[Formula: see text]S1/2ground state transition. The absorption is strongly broadened for Cu atoms submerged inside helium nanodroplets and a comparison with computed literature values is provided. An observed ejection of the dopant from the droplet is triggered upon excitation, populating energetically lower states. The formation of Cunclusters up to Cu7inside helium nanodroplets was observed by means of electron impact ionization mass spectroscopy.
authors.affiliation: Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria.
authors.forename: Friedrich
authors.initials: F
authors.lastname: Lindebner
authors.affiliation: Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria.
authors.forename: Andreas
authors.initials: A
authors.lastname: Kautsch
authors.affiliation: Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria.
authors.forename: Markus
authors.initials: M
authors.lastname: Koch
authors.affiliation: Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria.
authors.forename: Wolfgang E
authors.initials: WE
authors.lastname: Ernst
keywords: Copper cluster; Dopant ejection; Helium droplet; Relaxation; Resonant multiphoton ionization
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