Document Type
Article
Publication Date
3-8-2002
Publication Title
Journal of Chemical Physics
Abstract
We present the first results for a new supersonic nozzle that decouples nucleation and droplet growth, and closely controls the supersaturation and temperature during nucleation. We characterize the expansions using pressure trace measurements, and the aerosol properties using light scattering and small angle neutron scattering. We show that when nucleation and droplet growth are separated, the aerosol number density decreases, the average particle size increases, and the aerosol can be more monodisperse than that formed in a conventional nozzle. Under these conditions, we can estimate the nucleation rate J as a function of supersaturation S and temperature T directly from the experimental data. For D2O we find that the nucleation rate is 4.3×1015⩽J/cm−3 s−⩽6.0×1015 at 230.1⩽T/K⩽230.4 and 29.2⩽S⩽32.4.
Repository Citation
Streletzky, Kiril A.; Zvinevich, Yury; Wyslouzil, Barbara E.; and Strey, Reinhard, "Controlling Nucleation and Growth of Nanodroplets in Supersonic Nozzles" (2002). Physics Faculty Publications. 262.
https://engagedscholarship.csuohio.edu/sciphysics_facpub/262
DOI
10.1063/1.1446031
Version
Publisher's PDF
Publisher's Statement
© 2002 American Institute of Physics.
Volume
116
Issue
10
Comments
This work was supported by the National Science Foundation, Division of Chemistry under Grants Nos. CHE-9729274, CHE-0089136, and by the Donors of the Petroleum Research Fund administered by the American Chemical Society. The work is based on activities supported by the National Science Foundation under Agreement No. DMR-9986442.