Auger-electron—photoion and photoion—photoion coincidence studies on ionic fragmentation of SF6 following the S L-shell excitation

✍ Scribed by Y. Sato; K. Ueda; H. Chiba; E. Shigemasa; A. Yagishita

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 508 KB
• Volume: 196
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(92)85723-n

✦ Synopsis

Auger-electron-photoion coincidence study of SF6 excited by 196 eV photons shows that the dications having two holes in the outer-valence bands dissociate into various ionic fragments, while those having one hole in the outer-valence and one hole in the inner-valence (F 2s) bands mostly dissociate into atomic ionic fragments F+ and S+. Measurement of photoion-photoion coincidence efftciency curves in the S 2p threshold region reveals that not only the S 2p+t2, and es excitation above the S 2p threshold but also the S 2p+ars excitation below the S 2p threshold enhance the ion-pair formation, suggesting that a considerable part of the resonance-Auger-final states are subject to autoionization.