Fig. 3: Comparison of theory and experiment.
From: Electron correlation and relativistic effects in the excited states of radium monofluoride
Evolution of experiment-theory agreement as a function of increasing theoretical sophistication for (a) the five lowest-lying states and (b) the nine high-lying states. For the high-lying states, the CV4Z results did not allow relating calculated and observed levels, and they are not included. ‘+ZPE’ corresponds to the zero-point vibrational energy correction. c Evolution of the QED and 27e-T corrections to the excitation energies calculated at the 69e-extAE4Z level.
