The relaxation of temperature, coupling parameters, the excess part of equation of state, and the correlation energy of the non-isothermal hot dense plasmas are considered on the basis of the method of effective interaction potentials. The electron–ion effective interaction potential for the hot dense plasma is discussed. The accuracy of description of the dense plasma properties by the effective electron–ion interaction potential is demonstrated by the agreement of the derived quantities like stopping power and transport coefficients calculated using our methodology with the results of the finite-temperature Kohn-Sham density-functional theory molecular dynamics, and orbital-free molecular dynamics results as well as with the data obtained using other theoretical approaches.
The effective electron (proton)-He and electron (proton)-He+ screened pair interaction potentials arising as a result of partial screening of the helium nucleus field by bound electrons, taking into account both screening by free charged particles and quantum diffraction effect in dense plasmas were derived. The impact of quantum effects on screening was analyzed. It was shown that plasma polarization around the atom leads to the additional repulsion (attraction) between the electron (proton) and the helium atom. The method of constructing the full electron (proton)-He and electron (proton)-He + screened pair interaction potentials as the sum of the derived potentials with the polarization potential and exchange potential is discussed.
Previous papers on the quantum wakefield around an ion moving in a dense plasma have considered the collision frequency in the static approximation. In this work, we present the results of the dynamically screened ion potential taking into account the dynamical electron–ion collision frequency. The Lenard–Balescu dynamical collision frequency and various approximations to it are considered. As a main result of our investigation for the subsonic, sonic, and supersonic regimes, we find that the frequency dependence of collisions can be safely discarded if the electronic streaming velocity (relative to an ion) is comparable to or less than the electronic Fermi velocity.
The screened Hartree–Fock potential and the polarization potential for the description of the electron–helium scattering in dense plasmas are derived. The effects of quantum non‐locality and correlations of free electrons are taken into account in the plasma dielectric function. Plasma polarization leads to a significant increase in the transport cross‐section at small wave numbers ka < 2 in comparison with the case of an electron scattering on the isolated atom, where a is the mean distance between plasma electrons. It is shown that taking into account the quantum non‐locality and correlations is important at ka < 2.
The screened interaction potential between ions taking into account the wave nature of ions is presented. The parameters considered in this paper correspond to those of dense plasmas with ideal or weakly coupled quantum electrons and semiclassical non-ideal ions. The wave nature of ions is described using the concept of quantum potentials. The obtained effective interaction potential between ions takes into account screening by electrons and ionic quantum nonlocality. It is shown that the polarization of electrons around an ion leads to a decrease in the ion’s effective thermal wavelength and, conversely, screening of the ion field by electrons becomes weaker due to the wave nature of the ion. Furthermore, on the basis of the derived ion–ion interaction potential, we investigate the structural properties of semiclassical non-ideal ions. For hydrogen plasmas, the ionic quantum nonlocality effect is significant at rS < 0.3. The obtained results are relevant to high energy density physics.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.