Electron scattering by atomic hydrogen: Elastic and inelastic phenomena at 13. 9--200 eV

Journal Article · Fri Nov 01 04:00:00 EST 1991 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.44.5586· OSTI ID:6090773

Bray, I; Konovalov, D A; McCarthy, I E ^[1]

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1. Electronic Structure of Materials Centre, School of Physical Sciences, The Flinders University of South Australia, G.P.O. Box 2100, Adelaide 5001 (Australia)

A six-state coupled-channel optical potential for electron-atom scattering is applied to electron-hydrogen scattering at energies of 13.87, 16.46, 19.58, 35, 40, 54.4, 100, and 200 eV. The {ital n}=1, 2, and 3 channels are coupled explicitly, whereas the rest of the excited states of the atom including the continuum are taken into account via the {ital ab} {ital initio} complex nonlocal polarization potential. The differential and integrated cross sections, as well as the exchange asymmetries for {ital n}=1 and 2 channels, the total cross section, and the {lambda}, {ital R}, and {ital I} parameters for the 2{ital p} excitation, are presented at each energy. The ratio of differential cross sections for {ital n}=1 to 2, and for 2{ital s} to 2{ital p}, and the 2{ital s}+2{ital p} differential cross sections are found to be in good agreement with experiment. There are still some discrepancies between experiment and theory for the 2{ital p} angular correlation parameters {lambda}, {ital R}, and {ital I}.

• OSTI ID: 6090773
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 44:9; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
COLLISIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY RANGE
EV RANGE
HYDROGEN
INELASTIC SCATTERING
NONMETALS
SCATTERING
TOTAL CROSS SECTIONS