Homogeneous Nucleation of n-pentanol in a Laminar Flow Diffusion Chamber

摘要

As a contribution to the Joint Experiment on Homogeneous Nucleation, a version of a laminar flow diffusion chamber was developed for nucleation rate measurements. The design and operational characteristics of the chamber will be presented. Homogeneous nucleation rates of n-pentanol were measured as a function of saturation ratio in the temperature range between 260 K and 290 K. The results were compared to the classical nucleation theory. The experimental results were three orders of magnitudes higher than the theoretical predictions. The difference was almost constant over the whole temperature range. The results were compared with results from other experimental devices, they were in good agreement at lower temperatures.