Physics - Sciene

This study includes measurement of uranium concentration and calculates the specific activity in human blood samples (leukemia and health people) taken from some governorates of Iraq by using fission fragment track technique.The nuclear reaction used as source of uranium fission fragment is U-235 (n, f), obtained by the bombardment of U-235 with thermal neutrons from (Am- Be) source which has a flux of (5 x 10³ n.cm^-2.

The partitioning technique has been used to analyze the three and four electron systems into three-pairs electronic wave functions for Li-like ions (Li, Be⁺, B⁺⁺) and six-pairs electronic wave functions for Be-like ions (Li^-, Be, B⁺) by using Hartree-Fock wave functions of Clementi and Rotti.In this work the atomic scattering factor f(s) for K-shell and total atom for three and four electron systems are studied.

A systematic study of the non-relativistic Hartree-Fock method and its relativistic version, Dirac-Fock method for the average of configuration have been presented. In the non-relativistic case, a fully derivation of the Hartree-Fock equations were presented and relativistic corrections (mass-velocity, Darwin and spin-orbit terms) are treated as first-order perturbation.