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Observation of the long-range potential well of the \(\mathsf{(6)^1\Sigma^+_g(3s+5s)}\) state of Na\(\mathsf{_2}\)

  • T. Laue
  • P. Pellegrini
  • O. DulieuEmail author
  • C. Samuelis
  • H. Knöckel
  • F. Masnou-Seeuws
  • E. Tiemann
OriginalPaper

Abstract.

We report on the first observation of the outer well of the \((6)^1\Sigma^+_g\) state of Na2 molecule. The levels are populated in a molecular beam experiment with a three step laser excitation. The fact that these levels predissociate allows an almost background free detection by the appearance of atomic fluorescence. With this method almost all vibrational levels of the outer well are observed. The corresponding predissociation line widths show an oscillating behaviour. The theoretical description of the predissociation is presented in the framework of mapped Fourier grid Hamiltonian representation with optical potential, involving two coupled electronic states. Combining the spectroscopic information on energy positions and predissociation widths, a Rydberg-Klein-Rees potential curve is given for the outer well. Such a state could offer a reliable path for photoassociation of cold Na atoms and formation of ultracold Na2 molecules.

Keywords

Line Width Molecular Beam Laser Excitation Oscillate Behaviour Theoretical Description 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2003

Authors and Affiliations

  • T. Laue
    • 1
  • P. Pellegrini
    • 2
  • O. Dulieu
    • 2
    Email author
  • C. Samuelis
    • 1
  • H. Knöckel
    • 1
  • F. Masnou-Seeuws
    • 2
  • E. Tiemann
    • 1
  1. 1.Institut für QuantenoptikUniversität HannoverHannoverGermany
  2. 2.Laboratoire Aimé Cotton, CNRSOrsay CedexFrance

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