Lawrence Berkeley National Laboratory

We measured the soft x-ray emission (XES) in the the C and F K-regions of graphite fluoride (CF)n by supressing sample decomposition due to the synchrotron radiation (SR) excitation, and analyzed the X-ray spectral features using the DV-Xalpha method. The high-energy peak in the C K-spectra is assigned to the pi transition due to the C 2p hybridized with the F 2p orbitals. The XES can be successfully reproduced by calculated C and F 2p density of states (DOS) of a stretched C-F bond model in which the C-F bond length is longer than the typical length of 1.397 Angstroms.