Homogeneous Nucleation Rate in Supersaturated Water Vapor

  • V. Ždímal
  • David Brus
Conference paper

The rate of homogeneous nucleation in supersaturated vapors of water was studied experimentally using a static diffusion chamber. Helium was used as a carrier gas. Droplets grown by condensation were observed by illuminating the chamber across its whole height with a flattened laser beam and recording digital images of droplets trajectories. Image analysis was used to determine local values of nucleation rate from droplets “starting positions”. Rates were studied in the range 3 × 10−1 − 3 × 102 cm−3 s−1 at four isotherms: 290, 300, 310, and 320 K. Measured isothermal dependencies of nucleation rate of water on supersaturation were compared with prediction of classical theory of homogeneous nucleation.

Keywords Homogeneous nucleation, static diffusion chamber, supersaturation, condensation, water

Keywords

Convection Helium Supersaturation EPDM 

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Copyright information

© Springer 2007

Authors and Affiliations

  • V. Ždímal
    • 1
  • David Brus
    • 1
  1. 1.Laboratory of Aerosol Chemistry and PhysicsInstitute of Chemical Process FundamentalsCzech Republic

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