Perturbation theory with arbitrary boundary conditions for charged-particle scattering: Application to (e,2e) experiments in helium
- 1 January 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 45 (1) , R8-R10
- https://doi.org/10.1103/physreva.45.r8
Abstract
A perturbation series of the distorted-wave Born type is developed in such a way that the slow decrease of the Coulomb potential in which the incoming and scattered particles move plays no role. We apply this approach to triple-differential cross sections for electron-impact ionization of helium at low and intermediate energies, where we use Coulomb waves with an effective charge for the incoming, scattered, and ejected electron, and show that even though these wave functions are known to satisfy the wrong Coulomb boundary conditions at infinity, they give reasonably and unexpectedly good agreement with experiment.Keywords
This publication has 13 references indexed in Scilit:
- Triply-differential cross sections for ionization of helium by electronsJournal of Physics B: Atomic, Molecular and Optical Physics, 1991
- On the electron impact ionization of H (1s) in coplanar asymmetric geometryJournal of Physics B: Atomic, Molecular and Optical Physics, 1991
- Perturbation approximations for scattering amplitudes in ion-atom collisionsPhysical Review A, 1988
- Differential cross sections of direct single electron impact ionizationThe European Physical Journal D, 1986
- Addenda: Inelastic collisions of fast charged particles with atoms and molecules—The Bethe theory revisitedReviews of Modern Physics, 1978
- Inelastic Collisions of Fast Charged Particles with Atoms and Molecules—The Bethe Theory RevisitedReviews of Modern Physics, 1971
- Some remarks on integral expressions for scattering amplitudesJournal of Physics B: Atomic and Molecular Physics, 1968
- Theory of Electron Impact Excitation and Ionization of Atoms and IonsPhysical Review B, 1967
- On the Coulomb wave approximation applied to the electron impact excitation and ionization of atomsProceedings of the Physical Society, 1967
- On higher Born approximations in potential scatteringProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1951