Shape-resonant and many-electron effects in the S 2p photoionization of SF/sub 6/

Journal Article · Sat Oct 15 04:00:00 EDT 1988 · J. Chem. Phys.; (United States)

OSTI ID:6779509

Ferrett, T A; Lindle, D W; Heimann, P A; Piancastelli, M N; Kobrin, P H; Kerkhoff, H G; Becker, U; Brewer, W D; Shirley, D A

The core-level photoexcitation and photoionization of SF/sub 6/ were studied in the vicinity of the resonances below and above the S 2p threshold. The decay channels of the S 2p..-->..6a/sub 1//sub g/ discrete excitation were characterized, with decay leading mostly to valence-shell satellites. The S 2p continuum data show an oscillatory asymmetry parameter ..beta..(S 2p) near threshold that is virtually identical to ..beta..(Si 2p) in SiF/sub 4/. It also resembles: but differs from: theoretical curves for ..beta..(S 2p) in atomic sulfur and in SF/sub 6/. Data at the feature assigned as an e/sub g/ shape resonance indicate strong multielectron properties for this state, because a resonance in the S 2p satellite is observed at the same photon energy as the main-line resonance. We propose a unified model which generally includes configuration interaction both in the continuum-state manifold and between discrete doubly excited states and the continua, to explain this unexpected satellite behavior. Finally, the S(L/sub 2,3/VV) Auger electron asymmetry parameter shows no significant deviation from zero near the t/sub 2//sub g/ and e/sub g/ shape resonances.

• Research Organization: Department of Chemistry, University of California and Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720
• OSTI ID: 6779509
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 89:8; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AUGER ELECTRON SPECTROSCOPY
BREMSSTRAHLUNG
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INNER-SHELL IONIZATION
IONIZATION
PHOTOIONIZATION
RADIATIONS
SPECTROSCOPY
SULFUR COMPOUNDS
SULFUR FLUORIDES
SYNCHROTRON RADIATION