The Influence of the Ionic Core on Structural and Thermodynamic Properties of Dense Plasmas
Ismagambetova T. Muratov M. Gabdullin M.
December 2024Multidisciplinary Digital Publishing Institute (MDPI)
Plasma
2024#7Issue 4858 - 866 pp.
In this paper, a new ion–ion screened potential was numerically calculated, which takes into account the ion core effect, i.e., the influence of strongly bound electrons. The pseudopotential model describing the shielding of ion cores and the screening using the density response function in the long wavelength approximation were used. To study the influence of this ion core effect on dense plasma’s structural and thermodynamic properties, the integral Ornstein–Zernike equation was solved in the hypernetted chain approximation. Our results show that the ion core has a significant impact on ionic radial distribution functions and thermodynamic properties when compared to the results obtained for the Yukawa potential, which does not take the ion core into account. Increasing the steepness of the core edge or decreasing the depth of the minimum leads to more pronounced screening due to bound electrons.
dense plasma , effective ion–ion potential , radial distribution functions
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National Nanotechnology Laboratory of Open Type (NNLOT), Al-Farabi Kazakh National University, al-Farabi 71, Almaty, 050040, Kazakhstan
Institute of Applied Sciences and IT, Baizakov Str., 280, Almaty, 050040, Kazakhstan
Kazakh Physical Society, al-Farabi 71, Almaty, 050040, Kazakhstan
Kazakh British Technical University, Tole bi, 59, Almaty, 050000, Kazakhstan
National Nanotechnology Laboratory of Open Type (NNLOT)
Institute of Applied Sciences and IT
Kazakh Physical Society
Kazakh British Technical University
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