Small Angle Neutron Scattering from Nanodroplet Aerosols

Author

Barbara Ellen Wyslouzil
Janice L. Cheung
Gerald Wilemski, Missouri University of Science and TechnologyFollow
Reinhard Strey

Abstract

We report the first measurements of small angle neutron scattering from an aerosol. The aerosol was produced by expanding a D₂O-N₂ vapor mixture in a supersonic Laval nozzle. The neutron wavelength (0.5 nm) is less than the typical particle size, and we can therefore derive the average particle size (5-8 nm), number density (~10¹² cm^-3), and polydispersity of the size distribution directly from the experimental data rather than by inferring them from complex models of particle formation and growth. We also predict and observe a Doppler shift-induced anisotropy in the scattering pattern due to the directed motion of the aerosol in the nozzle. Further applications of this new technique are discussed.

Recommended Citation

B. E. Wyslouzil et al., "Small Angle Neutron Scattering from Nanodroplet Aerosols," Physical Review Letters, vol. 79, no. 3, pp. 431 - 434, American Physical Society (APS), Jul 1997.

The definitive version is available at https://doi.org/10.1103/PhysRevLett.79.431

Department(s)

Physics

International Standard Serial Number (ISSN)

0031-9007

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 1997 American Physical Society (APS), All rights reserved.

Publication Date

01 Jul 1997