Knowledge Bank

In previous $work,1$ an ``RKR-like'' inversion procedure for determining a repulsive diatom potential curve from the positions of the intensity extrema associated with continuum emission or absorption from a single vibrational level of a known bound state potential, was described and tested. The present paper presents and illustrates a complementary inversion procedure for determining the initial bound state curve associated with such a spectrum from the positions of these intensity extrema and knowledge of the repulsive final state curve. An application of the method to $data2$ for the $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\Sigma +$ state of NaK also demonstrates the utility of this procedure for cases in which the experimental data are incomplete and the vibrational assignment of the initial level is not known.