SEARCH OF THE LIQUID-VAPOR COEXISTENCE OF THE 2-DIMENSIONAL RESTRICTED PRIMITIVE MODEL

We report Monte Carlo simulations of a two-dimensional classical Coulo mb system with a short range attractive interaction between charges wh ich can be varied independently from the electrostatic interaction. We show that, as this attractive interaction is weakened, the critical t emperature of the liquid-vapor transition decreases and the density of the gas, in equilibrium with the liquid, also decreases. But the situ ation of a pure soft core Coulomb system was not reached. (C) 1995 Ame rican Institute of Physics.