A study of fermi hole for closed and open shell systems

الملخص EN

The electron correlation effect for the inter-electronic shell can be described by evaluating the Fermi hole for Li-atom and comparing with Be+ -, and B2+ - ions (Li-like ions)also the inter-particle distribution function due to the Fermi hole be described by evaluating the change which occurs un the two-particle radial distribution function ∆ ƒ KL (1 s, 3 s), between the inter-shell KL-shell using Hartree-Fock (HF) wave function, and by evaluating the Fermi hole ∆ ƒ (r12) change which occurs in two-particle radial distribution function D HF (r1,r2) between the CI and HF wave function approximations.