BINARY NUCLEATION RATE MEASUREMENTS OF N-NONANE METHANE AT HIGH-PRESSURES

We present homogeneous nucleation rates in the binary mixture n-nonane /methane in the supercritical regime, measured in a new pulse expansio n tube at pressures up to 40 bar, at a temperature of 240 K. It is sho wn that both n-nonane and methane are present in the critical cluster. The critical supersaturation of n-nonane decreases from 30 at 10 bar, down to 6 at 40 bar total pressure. (C) 1995 American institute of Ph ysics.