Stark effect measurements on the NaK molecule |
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Authors: | A Gerdes O Dulieu H Knöckel E Tiemann |
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Institution: | 1. Institut für Quantenoptik, Leibniz Universit?t Hannover, Welfengarten 1, 30167, Hannover, Germany 2. Laboratoire Aimé Cotton, CNRS, Bat. 505, Université Paris-Sud 11, 91405, Orsay Cedex, France
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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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