“…13, 14 Some work has been performed on nonmetal 2p soft X-ray absorption edges, Including ýwo reports of the S L 2 3 edge in MoS 2 . 1 5 , 6 A limited number of resonant PES studles have been reported at nonmeti edges, 17 " 2 1 but no reports of nonmetal edge resonances in transition metal compounds have been made. PES studies performed on gas-phase compounds such as SIF& 18,19 and SF 6 2 0 have shown enhancement of shake-up satellites rather than mainband feature at the Si and S 2 p edges, respectively.…”