Regular Article – Atomic Physics
Analysis of electronic properties of dense plasma-embedded highly charged ions using temperature-dependent ion sphere model
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior C.U., 04510, Mexico City, Mexico
2 Department of Physics, Aliah University, 700160, Newtown, Kolkata, India
Accepted: 14 November 2022
Published online: 22 November 2022
The total and orbital energies, dipole oscillator strength and Shannon entropy in position space are estimated for different energy levels of hydrogen- and helium-like Al and Cl ions embedded in a dense plasma medium mimicked by classical ion sphere (IS) model as well as by temperature-dependent analytic ion sphere (AIS) model. The associated Schrödinger and Hartree–Fock equations are solved by means of a numerical grid method. The results are compared with the literature values, wherever available, and found good agreement. The total energy reflects the ionization of the electron in the ground and excited states for one- and two-electron ions as the plasma density is gradually increased for a particular temperature. The nature of variation in dipole oscillator strength with the plasma parameters is a direct consequence of such ionization process. The Shannon entropy values in position space support the delocalization of the bound electron density with the increment of plasma density for fixed temperature. Contrast behavior is noted for the total energy and Shannon entropy with the increment of plasma temperature for fixed plasma density. It is a general finding that as the plasma electron temperature is sufficiently increased in the AIS model, we corroborated the excellent agreement with the results estimated using the IS model.
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