Evaluation Hartree-Fock energy of two electron systems for chemical elements with Z = 20 to 23

What is it about?

This research calculates the important atomic properties of two electronic systems (Ca+18, Sc+19, Ti+20 and V+21), which have an atomic number between (20-23). ​​The equations were programmed using the Mathcad program, where many atomic properties (radial function) were studied. For one particle, the expected value for one particle, the distribution function between molecules, the expected value between molecules, all energies such as attraction energy, potential energy, repulsion energy, total potential, kinetic energy, and Hartree-Fock energy, from which the total energies were calculated for each of the studied ions (Ca+18, Sc+ 19, Ti+20, V+21), where the values ​​of energies are found in the Hartree unit (-387.611014, - 427.9760, - 470.3719 and - 514.7477) respectively. All atomic properties studied were normalized and we used atomic units in our calculations.

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