Spin polarization and cross sections of electrons elastically scattered from heavy alkaline-earth atoms
نویسنده
چکیده
Semi-relativistic approach is employed to compute the differential and integrated cross sections, spin polarization P and the spin polarization parameters T and U for the scattering of electrons from barium and strontium atoms in the energy range from 2.0-300 eV. The projectile-target interaction is represented both by real and complex optical potential in the solution of Dirac equation for the scattered electrons. The real optical potential includes the static, a parameter free correlation polarization and a modified semi classical exchange potentials. The complex optical potential is constructed by adding a model absorption potential as its imaginary part to the real optical potential PACS: 34.80.Bm; 34.80.Nz
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