Dynamical structure factor of strongly coupled ions in a dense quantum plasma.

摘要: The dynamical structure factor (DSF) of strongly coupled ions in dense plasmas with partially and degenerate electrons is investigated. main focus on the impact electronic correlations (nonideality) ionic DSF. latter computed by carrying out molecular dynamics (MD) simulations a screened ion-ion interaction potential. screening taken into account invoking Singwi-Tosi-Land-Sjolander approximation, it compared to MD simulation data obtained considering random phase approximation using Yukawa We find that lead lower values ion-acoustic mode frequencies an extension applicability limit respect wave-number hydrodynamic description. Moreover, we show even weak coupling, have nonnegligible longitudinal sound speed. Additionally, potential adjustable parameter discussed, which will be interest, e.g., for interpretation experimental results DSF plasmas.