Electron-CF/sub 4/ elastic scattering in the static-exchange approximation

Journal Article · Sat Oct 01 04:00:00 EDT 1988 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.38.3303· OSTI ID:7065560

Huo, W M

We report differential, integral, and momentum-transfer cross sections for the elastic scattering of electrons by CF/sub 4/ from 5 to 35 eV. The calculations were carried out at the fixed-nuclei, static-exchange level using the Schwinger variational principle. Analyses of the partial channel amplitudes show four broad shape resonances; two in T/sub 2/, one in A/sub 1/, and one in E symmetries. The positions of these resonances agree with experimental data from total-cross-section measurements, dissociative attachment studies, and low-energy electron excitation spectra, the only exception being the 8.9-eV structure in the total-cross-section data. No experimental measurements on differential cross sections are available, but comparing with the corresponding static-exchange calculations for the e-CH/sub 4/ system, the e-CF/sub 4/ cross sections generally are less backward peaked.

• Research Organization: NASA Ames Research Center, Mail Stop 230-3, Moffett Field, California 94035
• OSTI ID: 7065560
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 38:7; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AMPLITUDES
CALCULATION METHODS
CARBON COMPOUNDS
CARBON FLUORIDES
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
FLUORIDES
FLUORINE COMPOUNDS
FOUR MOMENTUM TRANSFER
HALIDES
HALOGEN COMPOUNDS
INTEGRAL CROSS SECTIONS
MOLECULE COLLISIONS
MOMENTUM TRANSFER
RESONANCE
SCATTERING
SCATTERING AMPLITUDES
SCHWINGER VARIATIONAL METHOD
VARIATIONAL METHODS