2007/12/12 by Sergey P. Fisenko, Fisenko, Sergey P.
Physics and Astronomy · #Chemical Physics (physics.chem-ph) #FOS: Physical sciences #physics.chem-ph
paper · pdf · doi:10.48550/arxiv.0712.1944
20 pages, 8 figures
arxiv created 2007/12/12 · arxiv updated 2009/12/01
For high- pressure nucleation experiments in upward diffusion cloud chamber, there is the great deviation of predictions of classical nucleation theory from experimental results; the discrepancy is more than 10 orders of magnitude of nucleation rate. Experimental data for 1-propanol vapor are under investigation in this paper. It was shown that mathematical model of a single droplet growth and motion semi- quantitatively explained all experimentally discovered regularities. For explanations low nucleation rate versus high supersaturation, the coalescence mechanism in gaseous phase has been proposed. As result of coalescence the vast majority of newly formed clusters evaporate and restore vapor density and temperature profile in DCC. The observed picture with low nucleation rate is result of diffusion interaction between small clusters and droplets in nucleation zone for high- pressure nucleation experiments.