New Pade approximations for the free charges in two-component strongly coupled plasmas based on the Unsold-Berlin-Montroll asymptotics

Based on the available analytical formulae for the physical properties of the free charges in the quasi-classical density-temperature region new Pade approximations are derived. In the quasi-classical region the thermodynamical functions are at strong coupling determined by a Linear dependence on the Gamma-parameter, similar as for the strongly coupled electron gas. The existing Pade approximations for strongly coupled plasmas are modified in such a way that in the quasi-classical region the correct asymptotics is obtained. Based on the slope predicted by the Unsold theory, by the Berlin-Montroll theory or corresponding theories with linear Gamma asymptotics including corrections, concrete expressions are obtained and compared with other analytical approaches that neglect this case of asymptotics. (C) 1998 Elsevier Science B.V.