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Marcel Mudrich

Formation of cold bialkali dimers on helium nanodroplets

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  • M. Mudrich
  • O. Bünermann, Universität Bielefeld
  • ,
  • F. Stienkemeier, Universität Bielefeld
  • ,
  • O. Dulieu, Laboratoire Aimé Cotton, CNRS, Bâtiment 505
  • ,
  • M. Weidemüller, Albert-Ludwigs-Universität Freiburg

Cold alkali diatomic molecules (LiCs, NaCs) in the lowest vibrational state of the electronic triplet ground state are formed on superfluid helium nanodroplets. Using photoionization detection the excitation spectra of the 23 II ← 13+ transitions are recorded. The splitting of the vibrational structure in the LiCs spectrum, not observed in the NaCs spectrum, is interpreted in terms of molecular fine structure. The spectra are well reproduced by a model based on quantum chemistry potential curves including spin-orbit coupling, in combination with an asymmetric line shape function to account for cluster-induced broadening. Our refined potential curves provide important input data for the photoassociation of ultracold dipolar alkali molecules from atomic quantum gases.

TidsskriftThe European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics
Sider (fra-til)291-299
Antal sider9
StatusUdgivet - nov. 2004
Eksternt udgivetJa

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