Simple but accurate calculations on the elastic scattering of electrons and positrons from neon and argon
- 1 September 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 34 (3) , 1823-1840
- https://doi.org/10.1103/physreva.34.1823
Abstract
The method for constructing model polarization potentials for electron- and positron-atom systems, previously presented for targets containing up to two electrons, is extended to neon and argon targets. The empirical character of the method is reduced to the determination of a single effective radius for each target, so that electron scattering calculations can be carried out by reference to positron scattering data, or vice versa. In this work, electron data are used to fix the value of the effective radius of each target, which is then used in positron scattering calculations. For electron scattering, exchange is approximated by a local effective potential with two adjustable parameters. The calculated elastic total and differential cross sections are nevertheless in excellent agreement with recent experimental values and are as accurate as the results from much more elaborate calculations.Keywords
This publication has 68 references indexed in Scilit:
- Experimental studies of positrons scattering in gasesReports on Progress in Physics, 1985
- Electron-argon total cross section measurements at low energies by time-of-flight spectroscopyJournal of Physics B: Atomic and Molecular Physics, 1985
- Differential, integral, and momentum-transfer cross sections for elastic electron scattering by neon: 5 to 100 eVPhysical Review A, 1984
- Positron—Gas Scattering ExperimentsPublished by Elsevier ,1982
- The elastic scattering of electrons from inert gases. II. NeonJournal of Physics B: Atomic and Molecular Physics, 1981
- Total cross section measurements for electron scattering from molecular hydrogen at very low energiesJournal of Physics B: Atomic and Molecular Physics, 1980
- Measurement of Differential Cross Sections for the Elastic Scattering of Positrons by Argon AtomsPhysical Review Letters, 1979
- Elastic electron-neutral interaction measurements in neon at ultralow energiesPhysical Review A, 1975
- Total Electron—Atom Collision Cross Sections at Low Energies—A Critical ReviewReviews of Modern Physics, 1971
- Extrapolation of Electron-Rare Gas Atom Cross Sections to Zero EnergyPhysical Review B, 1963