Total photoabsorption cross-sections of CF3SF5 in the C, F and S K-shell regions

Abstract Total photoabsorption cross-sections of trifluoromethyl sulfur pentafluoride, CF 3 SF 5 , were measured in the C, F and S K-shell regions by using a double ionization chamber and synchrotron radiation at the SPring-8 facility. The maximum cross sections were found to be 6.3, 5.0 and 1.1 Mb for the C, F and S K-edges, respectively. The spectral features in the F K-shell region were characterized by the photoabsorption spectra of CF 4 and SF 6 and those in the S K-shell region resemble the peaks of SF 6 . The observed peaks for CF 3 SF 5 were tentatively assigned on the basis of a comparison with those for CF 4 and SF 6 measured simultaneously for references.