Potassium ground state scattering parameters and Born-Oppenheimer potentials from molecular spectroscopy

Stephan Falke, Horst Knoeckel, Jan Friebe +3

We present precision measurements with MHz uncertainty of the energy gap between asymptotic and well bound levels in the electronic ground state X ${}^1{\Sigma }_{\mathrm{g}}^{+}$ of the $^{39…