FIG. . The fluorine K-edge X-ray absorption spectrum of SF6. Static F 1s XA spectra obtained within the frameworks of DFT-ROCIS(blue line), TD-DFT/B3LYP(red line), and TD-DFT/CAM-B3LYP(orange line). The experimental spectrum is reproduced from Ref. . The symmetry of the corresponding unoccupied orbital that the F1s electron gets excited into is labeled along with the peaks. The computed spectra are normalized to the |F1s -1 6a 1 1g peak.