Threshold Photoelectron Spectroscopy and Photo Double-Ionization of Sulfur Hexafluoride M.A.C. Lopes(1,2), A.J. Yencha(3), D.B. Thompson(1), G.C. King(1) (1) Manchester University (2) Universidade Federal de Juiz de Fora (3) University at Albany The threshold photoelectron (TPE) spectrum of SF6 has been recorded over the photon energy range 25-140 eV using synchrotron radiation and a penetrating- field electron spectrometer. In addition, the photo double-ionization spec- trum of SF6 was obtained over the energy range 30.7-49.3 eV using the thres- hold photoelectrons coincidence (TPEsCO) technique. Inner-valence SF6+ ion states appear to play a major role in the formation of the SF6++ electronic ion states.