Low-energy electron-carbon monoxide scattering in the fixed-nuclei approximation

Thesis/Dissertation · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5017240

Carragher, B A

A non-iterative method is proposed for the study of low-energy scattering of electrons from molecules. This method involves solving the two-dimensional scattering equations directly without using the standard partial-wave decomposition. As a result, certain convergence problems (due to the truncation of the partial-wave expansion) are avoided. This partial different equation (pde) method is then applied to electron scattering from carbon monoxide in the fixed-nuclei approximation. Eigenphase sums are calculated using static, static-exchange, and static-exchange-polarization potentials. Model potentials are used for the exchange and polarization potentials. The static and static-exchange-polarization results are compared to a study done by Chandra (1975). The eigenphase sums for the ..sigma.. state in the static potential approximation are found to be approximately 30% higher than Chandra's result. The eigenphase sums for the 0 state in the static potential approximation agree fairly well, especially at higher energies. Comparison of the ..sigma.. and 0 states in the static-exchange-polarization approximation show good agreement with Chandra's results. However, the pde results show a larger resonance width. The ..delta.. state results are about 20% higher than Chandra's result. The static-exchange calculation done by Collins et al. (1980) is also compared to the pde results. The ..sigma.. state eigenphase sums are 80% higher than the Morrison and Collins results and about 60% higher than Collins et al. results at higher energies.

• Research Organization: Johns Hopkins Univ., Baltimore, MD (USA)
• OSTI ID: 5017240
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
COMPARATIVE EVALUATIONS
DIFFERENTIAL EQUATIONS
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ELECTRONS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
LEPTONS
MOLECULE COLLISIONS
OXIDES
OXYGEN COMPOUNDS
PARTIAL DIFFERENTIAL EQUATIONS
POLARIZATION
POTENTIALS
RESONANCE
SCATTERING
TWO-DIMENSIONAL CALCULATIONS