Molecular dynamics study of screening in ionic fluids

摘要: Molecular-dynamics simulations of molten and gaseous NaCl are used to probe the entire range screening behaviors including weakly strongly-coupled regimes as well transition between them. Our confirm that, in accordance with Debye–Huckel theory, weakly-coupled regime (corresponding ionic gas) spatial correlations ions decay monotonically, a length, λQ, given by Debye λD, which decreases increasing coupling strength. By contrast, melt) an oscillatory manner, λQ then being envelope damped oscillations. In theoretical predictions, increases Also agreement existing theories our show that from monotonic occurs at shortest possible whic...