Condensation of a supersaturated vapor. III. The homogeneous nucleation of CCl4, CHCl3, CCl3F, and C2H2Cl4

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Abstract
The upward thermal diffusion cloud chamber was used to measure the supersaturations required to cause an observed rate of homogeneous nucleation of 2 to 3 drops cm−3⋅sec−1. Measurements were made on carbon tetrachloride, chloroform, Freon 11, and 1,1,2,2‐tetrachloroethane over as much as a 90 K range of temperatures. The results obtained were compared to the predictions of the classical theory of homogeneous nucleation and to the predictions of the Lothe‐Pound theory. The classical theory was found to be in excellent agreement with all these measurements even though measurements on chloroform and Freon 11 by another technique have been reported to agree with the Lothe–Pound theory.