P. Syty

Critical minima in elastic electron scattering from argon

Relativistic ab initio calculations of both low- and high-angle critical minima in the differential cross sections are presented. The theoretical approach is based on the Dirac-Hartree-Fock method. Exchange between incident and target electrons is calculated exactly. Target polarization is described by ab initio potential taken from relativistic polarized orbital calculations. The position of our critical minima (39.3 eV, 68°) and (39.5 eV, 141°) agree well with recent measurements performed by Panajatovic et al.

Critical minima in elastic scattering of electrons from Ar and Zn

Abstract Ab initio relativistic calculations have been carried out to search for critical minima in the angle and energy differential cross-sections for the elastic scattering of electrons from argon and zinc atoms. Theoretical approach is based on the Dirac–Hartree–Fock method. Exchange between incident and target electrons is calculated exactly. Target polarization is described by an ab initio potential taken from relativistic polarized orbital calculations. Comparison is made with experimental data and other theoretical results.

Differential cross section minima in elastic scattering of electrons from zinc

Abstract Ab initio relativistic calculations have been carried out to search for minima in the angle and energy differential cross sections for the elastic scattering of electrons from zinc. Our theoretical approach is based on the Dirac–Fock method including the exchange interaction between the incident and the target electrons. The polarization of the target has been taken into account by ab initio potential from relativistic polarized orbital calculations. The positions of the calculated minima in the differential cross sections agree well with very recent measurements by Predojevic et al.

Relativistic multiconfiguration method in low-energy scattering of electrons from argon atoms

For the first time the differential cross sections of the elastic scattering of slow electrons from argon atoms are calculated in a relativistic multiconfiguration method. The correlation effects responsible for target polarization are treated in a relativistic configuration–interaction scheme that allows for dynamical effects. Calculations of the differential cross sections and spin polarization are discussed and compared with experimental and other theoretical data.

Relativistic multiconfiguration method in low-energy scattering of electrons from xenon atoms

Abstract The elastic scattering of slow electrons from xenon atoms is calculated in a relativistic multiconfiguration method. The correlation effects responsible for target polarization are treated in a relativistic configuration-interaction scheme that allows for dynamics effects. Calculations of the spin polarization and differential cross sections are discussed and compared with experimental and other theoretical data.