Elastic scattering of electrons and positrons by bound gallium and arsenic atoms

Journal Article · Mon Jul 15 04:00:00 EDT 1991 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.350362· OSTI ID:5758590

Oeztuerk, N; Williamson, W Jr ^[1]; Antolak, A J ^[2]

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1. Department of Physics and Astronomy, The University of Toledo, Toledo, Ohio 43606 (US)
2. Theoretical Division, Sandia National Laboratories, Livermore, California 94551 (US)

Elastic differential and total cross sections for positrons, from 5 eV to 10 keV, and for electrons, from 50 eV to 10 keV, scattered by bound gallium and arsenic atoms have been calculated using the method of partial waves. The optical potential consists of a static potential, a Buckingham-type polarization potential, and the Mittleman--Watson exchange potential (for electrons). Low-order partial wave phase shifts are computed by numerical integration of the radial part of the Schroedinger equation. For higher orders, a closed analytic expression is obtained in the first Born approximation for the phase shifts. The calculated total cross sections are parametrized in terms of the screened Rutherford cross section to be used in Monte Carlo transport codes.

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5758590
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 70:2; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARSENIC
ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY RANGE
EV RANGE
EV RANGE 01-10
EV RANGE 10-100
EV RANGE 100-1000
GALLIUM
KEV RANGE
KEV RANGE 01-10
METALS
NATIONAL ORGANIZATIONS
PARTIAL WAVES
PHASE SHIFT
POSITRON COLLISIONS
POSITRON-ATOM COLLISIONS
POTENTIAL SCATTERING
SANDIA LABORATORIES
SCATTERING
SEMIMETALS
TOTAL CROSS SECTIONS
US AEC
US DOE
US ERDA
US ORGANIZATIONS