Studies on critical phenomena in fluid systems

Abstract

The coexistence curve measurement of this binary liquid mixture was undertaken mainly because of its very low gravity?affected region. Also, the determination of Tc and the critical concentration are necessary for any further study on this system, and this is the first time that the coexistence curve of the system is measured. The value of the order?parameter exponent ? is nearly 0.525, which agrees with the RG theory calculations. The series?expansion technique predicts a value nearly 0.512, and this technique is dependent on the spin dimensionality n. The diameter clearly deviates from rectilinearity, but no categorical statement can be made about the exponent characterizing the deviation. The mole fraction seems to be preferred more than V.F. or W.F. for being the correct order parameter.