Abstract
The spin polarisation parameters S, T, U and differential cross sections are calculated for low-energy electrons elastically scattered from mercury atoms. Additionally the moduli and the relative phases of the scattering amplitudes are calculated. The applied theoretical method is based on the scattering Dirac-Fock equation, where the exchange is calculated exactly. The scattering potential is a combination of two terms: the frozen-core Dirac-Fock potential and the polarisation model potential with one adjustable cut-off parameter. The results obtained are in very good agreement with the recent experimental and theoretical data of the spin polarisation parameters. Some discrepancies are noted in the case of the absolute differential cross sections.
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