LOCAL-STRUCTURE OF MICROEMULSION

Correlation function between surfactant particles aligned along common direction is calculated in the Ciach-Hoye-Stell lattice model. We fin d that in the longitudinal direction antiferromagnetic ordering occurs in the whole region of stability of the homogeneous phase. A typical distance between neighboring oppositely oriented amphiphiles is differ ent from the characteristic size of water domains. In the transversal direction, the form of the correlation function is related to the stru cture of the ordered low-temperature phase in coexistence with the mic roemulsion. In the proximity of the lamellar phase the correlation fun ction decays monotonically indicating local ''lamellar'' ordering, whi le near the cubic bicontinuous phase it exhibits damped oscillations a round zero.