Advanced Physical Research
Advanced Physical Research is an open access Journal, publishing fully peer-reviewed original and review papers as well as brief reports on topics in all areas of theoretical and applied physics. The journal provides a platform for researchers who wish to summarize a field of physics research and share this work as widely as possible. The published papers provide an overview of the main developments on a particular topic, with an emphasis on recent developments, and sketch an outlook on future developments.
A Study of Radial Electron Density and One-Electron Expectation Values for the 2s2 Configuration in
Atoms with 4 ≤ Z ≤ 15
- Published: 18-02-2026
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In this study, the Hartree–Fock–Ruthan method was used with Slater-type orbitals to examine a group of atoms and ions with atomic numbers from Z = 4 to Z = 15. The main calculations focused on the radial electron density distribution, several expectation values of ⟨r1 n⟩, and the nuclear magnetic shielding constant. The results show clear changes in the shape of the electron density and in the position of its main peaks as the nuclear charge increases. The values ⟨r1 n⟩ of and the shielding constant also changed in a regular way across the studied atoms and ions. These results provide a simple view of how some electronic properties vary when the nuclear charge becomes larger.
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