High-energy forward elastic scattering of electrons: Born amplitudes for a pseudostate model of atomic hydrogen

Journal Article · Mon Oct 01 04:00:00 EDT 1984 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.30.1636· OSTI ID:6235712

Geltman, S; Nesbet, R K

Exact second-Born-approximation elastic scattering amplitudes are computed for a dipole excitation pseudostate model of electron scattering by ground-state atomic hydrogen. Calculations at 15, 25, and 35 keV incident energy show a forward peak in the differential elastic cross section. The optical theorem is exactly satisfied by these calculations, and the magnitude of the forward peak is determined primarily by physical values of the atomic static polarizability and oscillator strength. In the energy range considered, the computed peak is smaller by a large factor than the magnitude required to interpret recently observed experimental data in terms of single elastic collisions of electrons with ground-state atoms.

• Research Organization: Joint Institute for Laboratory Astrophysics, National Bureau of Standards and University of Colorado, Boulder, Colorado 80309
• OSTI ID: 6235712
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 30:4; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AMPLITUDES
ATOM COLLISIONS
BORN APPROXIMATION
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELECTRICAL PROPERTIES
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY RANGE
HYDROGEN
KEV RANGE
KEV RANGE 10-100
NONMETALS
OSCILLATOR STRENGTHS
PHYSICAL PROPERTIES
POLARIZABILITY
SCATTERING
SCATTERING AMPLITUDES
SMALL ANGLE SCATTERING