Exchange effects in electron-impact ionization of atomic hydrogen

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.46.5714· OSTI ID:6947932

Ray, H; Roy, A C ^[1]

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1. Department of Physics, University of Kalyani, Kalyani 741235, West Bengal (India)

A method for obtaining the exchange scattering amplitude for electron-impact ionization of atomic hydrogen in the eikonal approximation is developed. The expression for the eikonal amplitude in the present case turns out to be a two-dimensional integral which can be evaluated numerically with convenience. This exchange amplitude can be combined with the corresponding direct amplitude to calculate both differential and total cross sections for electron-impact ionization of hydrogen atoms. We present numerical results for triply differential cross sections (TDCS) for the H({ital e},2{ital e})H{sup +} process for incident energies of 150 and 250 eV. A comparison is made of the present TDCS with the corresponding results of other calculations and experiment.

• OSTI ID: 6947932
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 46:9; 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
AMPLITUDES
ATOM COLLISIONS
COLLISIONS
EIKONAL APPROXIMATION
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY RANGE
EV RANGE
EV RANGE 100-1000
EXCHANGE INTERACTIONS
HYDROGEN
INTERACTIONS
IONIZATION
NONMETALS
SCATTERING AMPLITUDES