Accurate ab initio calculation on the low-energy elastic scattering of electrons from helium

Journal Article · Fri Sep 15 04:00:00 EDT 1989 · Physical Review (Section) A: General Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevA.40.2976· OSTI ID:5593728

Saha, H P ^[1]

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1. Department of Physics, University of Central Florida, Orlando, FL 32816-0993 (US)

The multiconfiguration Hartree-Fock method developed by Saha (Phys. Rev. A 39, 5048 (1989)) to study scattering of electrons from atoms has been applied to the low-energy elastic scattering of electrons from helium atoms. The short-range electron correlation and the long-range dynamical polarization of the target by the scattering electron, which are very important in these calculations, have been taken into account in an accurate {ital ab} {ital initio} manner through the configuration-interaction procedure. Detailed results for phase shifts, elastic differential, integral-elastic, and momentum-transfer cross sections for electrons elastically scattered from helium are reported for the low and intermediate energies ranging from 0.58 to 50 eV. The present results are compared with accurate experimental measurements and theoretical calculations. It is found that the present multiconfiguration self-consistent-field method produces high-quality results that show excellent agreement with experimental measurements and compare well with other accurate theoretical calculations.

• OSTI ID: 5593728
• Journal Information: Physical Review (Section) A: General Physics; (USA), Journal Name: Physical Review (Section) A: General Physics; (USA) Vol. 40:6; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY RANGE
EV RANGE
FLUIDS
GASES
HARTREE-FOCK METHOD
HELIUM
INFORMATION
NONMETALS
NUMERICAL DATA
PHASE SHIFT
POTENTIAL SCATTERING
RARE GASES
SCATTERING
THEORETICAL DATA