Static and dynamic structure factors with account of the ion structure for high-temperature alkali and alkaline earth plasmas*

Abstract

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 Thermodynamics of plasmas -52.38.Ph X-ray scattering

Thermodynamics of Equilibrium Alkali Plasma. Simple and Accurate Analytical Model for Non-Trivial Case

“…For example, for the same temperature range this description can provide the same quantitative results for all the alkali systems. A more accurate theoretical description can be performed using more rigorous theoretical approaches such as the droplet model of a nonideal alkali plasma (see the studies of Fortov, Ebeling, Röpke and coworkers) or the moment theory developed within the Bogoliubov's ideas [21,24,49]. The EoS considered in the given study is of the type of singlephase equation of states; it does not predict any phase transitions and critical point parameters, nevertheless, it allows one to evaluate the thermodynamic properties of supersaturated vapors.…”

“…Proper accounting for all the interaction effects can be done using the advanced theories developed in the framework of statistical mechanics (see, for example, Refs. [25,24,23]). On the other hand, virial equation (2) can only be used to obtain estimates and approximate thermodynamic results with the effective particular potentials such as the Hellmann potential and the Hellmann-Gurski-Krasko potential [26].…”