Scattering of low-energy electrons and positrons by atomic beryllium: Ramsauer-Townsend effect
Atomic Physics
2015-06-22 v1
Abstract
Total cross sections for the scattering of low-energy electrons and positrons by atomic beryllium in the energy range below the first inelastic thresholds are calculated. A Ramsauer-Townsend minimum is seen in the electron scattering cross sections, while no such effect is found in the case of positron scattering. A minimum total cross section of 0.016 a.u. at 0.0029 eV is observed for the electron case. In the limit of zero energy, the cross sections yield a scattering length of -0.61 a.u. for electron and +13.8 a.u. for positron scattering.
Keywords
Cite
@article{arxiv.1408.1389,
title = {Scattering of low-energy electrons and positrons by atomic beryllium: Ramsauer-Townsend effect},
author = {David D. Reid and J. M. Wadehra},
journal= {arXiv preprint arXiv:1408.1389},
year = {2015}
}