Electronic Resource
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
97 (1992), S. 8197-8200
ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
Elastic differential cross-section measurements of gaseous SF6 were made with 30 keV electrons in the range of 0.25 bohrs−1≤s≤10 bohrs−1. Structural parameters derived in this study closely matched those found in an earlier total (elastic plus inelastic) scattering investigation. Multiple-scattering effects were incorporated in the structural refinement. The discrepancies between the independent atom model and the measured differential cross section reproduce earlier total scattering results for momentum transfers of greater than 5 bohrs−1. By extending the measurements to smaller s values, a closer examination of a Hartree–Fock calculation for SF6 was possible. It was found that the difference curve obtained from the Hartree–Fock calculation matched the experimental data in this region. A more quantitative analysis was performed using the analytic expressions of Bonham and Fink to compute moments of the molecular charge distribution from the differential cross-section data. Comparison of these results with similar fits to the Hartree–Fock calculation confirmed the good agreement between the Hartree–Fock calculation and the current elastic data.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.463442
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