Electric Microfield Distributions in Alkali Plasmas with Account of the Ion Structure

Abstract

The e − e , e − i, i − i and charge-charge static structure factors are calculated for alkali and Be 2+ plasmas using the method described by Gregori et al. in [1]. The dynamic structure factors for alkali plasmas are calculated using the method of moments [2], [3]. In both methods the screened Hellmann-Gurskii-Krasko potential, obtained on the basis of Bogolyubov's method, has been used taking into account not only the quantum-mechanical effects but also the ion structure [4]. PACS. 52.27.Aj Alkali and alkaline earth plasmas, Static and dynamic structure factors-52.25.Kn Ther-modynamics of plasmas-52.38.Ph X-ray scattering

Microfields, Kinetic Equations and Fusion Rates in Exploding Ion Clusters

“…At all coupling strengths for which the simulations have been performed, the microfield distribution shows long tails indicating a large probability of high microfields. On the other hand the existence of long range tails 1/E α+1 was conformed by simulations for Coulomb systems including correlations [24][25][26]. This way our main conclusions remain valid.…”

“…Applications were discussed in [16][17][18] Summarizing all results discussed so far for ionic clusters and plasmas we arrive at the hypothesis that all microfield distributions belong at least in certain approximation to the class of Levy distributions, with parameters α and E n in a broad range. The concrete values may depend on the boundary conditions of clusters [18] and on density, temperature and ionic species [24][25][26]. The longest correlations found so far (the smalles indices) were detected for hydrogen plasmas (point charges).…”

“…In recent work based on molecular dynamics simulations of two-component plasmas a whole spectrum of indices has been obtained by in dependence on density and temperature [23][24][25][26].…”

Electric Microfield Distributions in Alkali Plasmas with Account of the Ion Structure in a Moderately Coupled Approximation

“…a) b) In the recent work [7] on a base of the Ortner method the EMD for alkali plasmas at low and moderately large Γ have been calculated. There the RDFs have been determined in the Debye approximation (20) in [4] (weakly coupled regime).…”

“…In order to correctly describe alkali plasmas at moderate temperatures one needs to take into account the ion structure. In the previous works [4], [7] we described the electron-ion and ion-ion Hellmann-Gurskii-Krasko (HGK) potentials [2] which takes into account the ion structure shown in the Figures 1a and c:…”