IONIC FRAGMENTATION OF INNER-SHELL EXCITED MOLECULES

The combination of tuneable synchrotron radiation and multi coincidenc e time-of-flight mass spectrometry is an effective means of studying t he core-hole decay and fragmentation of inner-shell excited molecules. In addition to aiding spectral interpretation, partial ion and ion-pa ir yields enable both the more specific identification of fragmentatio n channels and the identification of site and/or state selective fragm entation processes. The power of photoelectron-photoion-photoion coinc idence (PEPIPICO) and related techniques is illustrated using selected examples from recent high resolution spectroscopic and ionic fragment ation studies of PF3 and SPF3. (C) 1998 Elsevier Science B.V.