Two-step excitation of Rb atoms on He nanodroplets (Articolo in rivista)

Type
Label
  • Two-step excitation of Rb atoms on He nanodroplets (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1140/epjd/e2010-10504-5 (literal)
Alternative label
  • Theisen, M.; Lackner, F.; Ancilotto, F.; Callegari, C.; Ernst, W. E. (2011)
    Two-step excitation of Rb atoms on He nanodroplets
    in The European physical journal. D, Atomic, molecular and optical physics (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Theisen, M.; Lackner, F.; Ancilotto, F.; Callegari, C.; Ernst, W. E. (literal)
Pagina inizio
  • 403 (literal)
Pagina fine
  • 408 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 61 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Graz University of Technology; University of Padua; CNR IOM Democritos (literal)
Titolo
  • Two-step excitation of Rb atoms on He nanodroplets (literal)
Abstract
  • We present the first sequential laser excitation of atom-doped helium nanodroplets. Rubidium atoms on the surface of helium nanodroplets are selectively excited with a continuous wave laser to the 5(2)P(1/2) state so as not to desorb from the nanodroplets. From there they are excited by a laser pulse to the 5 2 D state; a laser-induced fluorescence (LIF) spectrum is recorded by monitoring the 6(2)P -> 5(2)S(1/2) emission. The LIF spectrum differs from that of the two-photon one-color direct excitation spectrum 5(2)D <- 5(2)S(1/2), indicating that the system does relax vibrationally during the lifetime of the 5(2)P(1/2) state. To model the LIF spectra we use calculated energy levels of the Rb atom as a function of its distance R from the center of the helium nanodroplet. The Franck-Condon factors of the resulting potential energy curves agree with the experimental spectra. In the future the 5(2)P(1/2) state can be used as a springboard to reach high-lying S-2 and D-2 states, and possibly create an artificial super-atom. (literal)
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