In a joint experimental and theoretical effort, we carried out a detailed study of elastic electron scattering from Kr atoms. Absolute angle-differential cross sections for elastic electron scattering were measured over the energy range 0.3$-$9.8 eV with an energy width of about 13 meV at scattering angles between 0${}^{°}$ and 180${}^{°}$. Excellent agreement is obtained between our experimental data and predictions from a fully relativistic Dirac $B$-spline $R$-matrix (close-coupling) model that accounts for the atomic dipole polarizability through a specially designed pseudostate.

• Received 13 January 2011

DOI:https://doi.org/10.1103/PhysRevA.83.032713