Resonance enhancement of relativistic effects for the scattering of very slow electrons by heavy atoms
V. A. DzubaInstitute of Nuclear Physics, Novosibirsk 630090, U.S.S.RV. V. FlambaumInstitute of Nuclear Physics, Novosibirsk 630090, U.S.S.RO. P. SushkovInstitute of Nuclear Physics, Novosibirsk 630090, U.S.S.R
ABI
Abstract
Polarization of scattered electrons is enhanced up to 1 near p- and d-wave resonances or weakly bound negative-ion energy levels (\ensuremath{\Vert}E\ensuremath{\Vert}\ensuremath{\lesssim}0.1 eV, ${\mathit{v}}^{2}$/${\mathit{c}}^{2}$\ensuremath{\lesssim}${10}^{\mathrm{\ensuremath{-}}6}$). We consider as examples Ra and Ba. We also note that the cross section for Ra is very large (>${10}^{11}$ b at electron energy \ensuremath{\sim}${10}^{\mathrm{\ensuremath{-}}2}$ eV).
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