Stark effect measurements on the NaK molecule

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 v...

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Bibliographic Details
Published in:The European physical journal. D, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2011-11, Vol.65 (1-2), p.105-111
Main Authors: Gerdes, A., Dulieu, O., Knöckel, H., Tiemann, E.
Format: Article
Language:English
Subjects:
Accuracy
Applications of Nonlinear Dynamics and Chaos Theory
Atomic
Dipole moment
Electric dipoles
Ground state
Mathematical analysis
Molecular
Molecular beams
Optical and Plasma Physics
Physical Chemistry
Physics
Physics and Astronomy
Quantum Information Technology
Quantum Physics
Regular Article
Spectroscopy/Spectrometry
Spintronics
Stark effect
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Summary: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)].
ISSN:1434-6060
1434-6079
DOI:10.1140/epjd/e2011-20048-9