Determination of the Li–Hg Intermolecular Potential from Molecular-Beam Scattering Measurements

Abstract

The experimental differential‐cross‐section extrema data of Groblicki and Bernstein have been analyzed and yield a family of potential parameters. These results were combined with the inferences obtainable from the glory extrema in the total cross sections of Rothe and Veneklasen to deduce a potential compatible with both experiments. The resulting potential is found to have a well depth ${\text{ε\hspace{0.17em}=\hspace{0.17em}1.70\hspace{0.17em}×\hspace{0.17em}10}}^{\text{−13}}\mathrm{erg}\text{\hspace{0.17em}±\hspace{0.17em}3\%}$ with a size parameter $r_m\text{\hspace{0.17em}=\hspace{0.17em}3.02 Å\hspace{0.17em}±\hspace{0.17em}3\%}$ . The long‐range coefficient is $C_6{\text{\hspace{0.17em}=\hspace{0.17em}4.4\hspace{0.17em}×\hspace{0.17em}10}}^{\text{−58}}\mathrm{erg}·{\mathrm{cm}}^6\text{\hspace{0.17em}±\hspace{0.17em}60\%}$ .