Fig. 2: Level diagram of RaF up to 30,000 cm−1.
From: Electron correlation and relativistic effects in the excited states of radium monofluoride
Left: All levels are observed experimentally in this work. The electronic term symbols have been assigned according to the 69e-extAE4Z + corrections calculations (see text for details). Right: Zoomed-in comparison of experimental excitation energies with respect to the vibronic ground state and FS-RCCSD calculations at different levels of sophistication (increasing from right to left). The wavenumber scale pertains to each inset plot separately. Error bars are included only for the most precise calculations (wide diamonds) and correspond to the uncertainty of the method of calculations, as described in Methods. In most cases, the error bars are smaller than the data marker.
