Abstract
Results from a fully relativistic 36-state Dirac $B$-spline $R$-matrix (close-coupling) calculation for $e$-Hg collisions are reported. Angle-integrated and angle-differential cross sections for elastic scattering and excitation of the $(6s6p)\phantom{\rule{0.2em}{0ex}}{^{3}P}_{0,1,2}^{o}$ and $(6s6p)\phantom{\rule{0.2em}{0ex}}{^{1}P}_{1}^{o}$ states are compared to experimental data and predictions from other theories. We generally obtain a significant improvement in the agreement between experiment and theory compared to previous distorted-wave and close-coupling attempts, in particular, for the near-threshold region that is dominated by various $6s6{p}^{2}$ negative-ion resonances.
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