Determination of the Potential Curve for the X~1Σ~+ state of the HCl Molecule by Processing Spectroscopic Data within the Framework of Kratzer Model with Screening

摘要

Experimental data on vibration-rotation levels of the H~(35)Cl molecule are processed within the framework of the Kratzer model with screening using the 1/N expansion method. The potential curve of the ground electronic state of the HCl molecule is determined, and the result is compared with the Rydberg-Klein-Rees potential. It is shown that the approach used in the paper makes it possible to reliably reconstruct the molecular potential curve in a wide range of internuclear distances on the basis of processing a relatively small set of spectroscopic data.