Restricted primitive model

The restricted primitive model (RPM) consists of an equimolar (i.e. neutral)-equisized mixture of anions and cations which interact via the potential

$\Phi _{RPM}(r)=\Phi _{HS}(r)+{\frac {1}{4\pi \varepsilon _{0}}}{\frac {q_{+}q_{-}}{r}}$

where $\Phi _{HS}(r)$ is the hard sphere potential.

See also

• Soft primitive model
• Ultrasoft restricted primitive model

References

Related reading

• Carlos Vega, José L. F. Abascal, Carl McBride and Fernando Bresme "The fluid–solid equilibrium for a charged hard sphere model revisited", Journal of Chemical Physics 119 pp. 964-971 (2003)
• José L. F. Abascal, Carlos Vega, Carl McBride and Fernando Bresme "Characterization of the order-disorder transition of a charged hard-sphere model", Physical Review E 68 052501 (2003)