Exchange effects in the independent-atom model for electron--hydrogen-molecule elastic scattering

Journal Article · Mon Dec 01 04:00:00 EST 1980 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.22.2451· OSTI ID:6878544

Jhanwar, B L; Khare, S P; Sharma, M K

It is shown that all the previous procedures to include exchange effects in the elastic scattering of electrons by the ground-state hydrogen molecule within the framework of the independent-atom model are improper. The proper way to include exchange has been pointed out. The direct scattering amplitudes for the scattering of electrons by the hydrogenlike atom are obtained in the modified Glauber approximation and by the eikonal Born series method. Exchange scattering amplitude is calculated in the Ochkur approximation. The differential cross sections for the hydrogen molecule are then obtained in the independent-atom model. The results are in very good agreement with the absolute experimental data for impact energies E> or =100 eV.

• Research Organization: Department of Chemistry, University of Western Ontario, London, Ontario, Canada
• OSTI ID: 6878544
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 22:6; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AMPLITUDES
ATOMIC MODELS
COLLISIONS
CORRELATIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON EXCHANGE
ELECTRON TRANSFER
ELECTRON-MOLECULE COLLISIONS
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
EV RANGE
EV RANGE 100-1000
GROUND STATES
HYDROGEN
MATHEMATICAL MODELS
MOLECULE COLLISIONS
MOLECULES
NONMETALS
SCATTERING
SCATTERING AMPLITUDES