Sulphur hexaflouride: low energy (e, 2e) experiments and molecular three-body distorted wave theory. (15th September 2016)

• Record Type: Journal Article
• Authors: Nixon, Kate L; Murray, Andrew J; Chaluvadi, H; Ning, C G; Colgan, James; Madison, Don H
• Is Part Of: Journal of physics. Volume 49:Number 19(2016:Oct. 01)
• Publication Date: 2016-09-15
• Subjects: (e, 2e) spectroscopy -- sulphur hexaflouride -- proper average over molecular orientations -- molecular three-body distorted wave; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/0953-4075/49/19/195203
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: Experimental and theoretical triple differential ionisation cross-sections (TDCSs) are presented for the highest occupied molecular orbital of sulphur hexafluoride. These measurements were performed in the low energy regime, with outgoing electron energies ranging from 5 to 40 eV in a coplanar geometry, and with energies of 10 and 20 eV in a perpendicular geometry. Complementary theoretical predictions of the TDCS were calculated using the molecular three-body distorted wave formalism. Calculations were performed using a proper average over molecular orientations as well as the orientation-averaged molecular orbital approximation. This more sophisticated model was found to be in closer agreement with the experimental data, however neither model accurately predicts the TDCS over all geometries and energies.