Ionisation cross sections in positron-helium scattering
- 1 January 1985
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 18 (2) , 369-377
- https://doi.org/10.1088/0022-3700/18/2/022
Abstract
Positron impact ionisation cross sections for helium atoms have been calculated in the energy range 30-150 eV. The initial state of the system is represented by a distorted wave and the final state is described by (i) a product of two unscreened Coulomb functions and (ii) a product of a plane wave and the Coulomb function. The corresponding two sets of results using the plane wave in the incident channel have also been reported. The authors' results have been compared with other existing theoretical and experimental estimates of e+-He ionisation cross sections and experimental values of e--He ionisation cross sections.Keywords
This publication has 12 references indexed in Scilit:
- Total ionization cross section in electron-hydrogen scatteringThe European Physical Journal A, 1984
- Positronium formation in positron-helium scatteringPhysical Review A, 1983
- Positronium formation cross sections in the inert gasesJournal of Physics B: Atomic and Molecular Physics, 1983
- Positron-atom and positron-molecule collisionsPhysics Reports, 1982
- Inelastic scattering of positrons by helium atoms at intermediate energiesJournal of Physics B: Atomic and Molecular Physics, 1979
- Total cross sections for electron scattering by HeJournal of Physics B: Atomic and Molecular Physics, 1977
- The Coulomb-projected Born approximation. V. Ionization of heliumJournal of Physics B: Atomic and Molecular Physics, 1974
- Second Born approximation to the elastic scattering of electrons and positrons by helium atomsJournal of Physics B: Atomic and Molecular Physics, 1974
- The Coulomb-projected Born approximation. IV. Ionization of hydrogenJournal of Physics B: Atomic and Molecular Physics, 1974
- The measurement of total cross sections for positrons of energies 2-400 eV in He, Ne, Ar, and KrJournal of Physics B: Atomic and Molecular Physics, 1973