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Stark effect measurements on the NaK molecule

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  • Cold and ultracold molecules
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Abstract

In a newly built molecular beam apparatus we have measured permanent electric dipole moments of the B 1 Π and X 1 Σ + states of NaK to test the vibrational dependence of the dipole moment function as predicted by ab initio calculations by Aymar and Dulieu [J. Chem. Phys. 122, 204302 (2005)]. Four vibrational bands were studied, the dipole moment for the B 1 Π decreases from 2.73(2) D for v = 3 to 1.99(2) D for v = 13. The vibrational dependence shows a fairly good agreement with theory, but the absolute values are lower than those from the calculation by 13%. The ground state dipole moment of 2.72(6) confirms the earlier result by Wormsbecher et al. [J. Chem. Phys. 74, 6983 (1981)].

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Authors and Affiliations

  1. Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167, Hannover, Germany

    A. Gerdes, H. Knöckel & E. Tiemann

  2. Laboratoire Aimé Cotton, CNRS, Bât. 505, Université Paris-Sud 11, 91405, Orsay Cedex, France

    A. Gerdes & O. Dulieu

Authors
  1. A. Gerdes
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  2. O. Dulieu
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  3. H. Knöckel
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  4. E. Tiemann
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Correspondence to H. Knöckel.

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Gerdes, A., Dulieu, O., Knöckel, H. et al. Stark effect measurements on the NaK molecule. Eur. Phys. J. D 65, 105–111 (2011). https://doi.org/10.1140/epjd/e2011-20048-9

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  • DOI: https://doi.org/10.1140/epjd/e2011-20048-9

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