Potential energies of the 41Π and 51Π states of NaK by polarization labelling spectroscopy and by ab initio calculations

The 41Π and 51Π states of the NaK molecule have been investigated experimentally by polarization labelling spectroscopy technique and theoretically within the framework of the ab initio pseudopotential method. A very good agreement has been obtained between the calculated potential curves and those determined from experimental observations.