Determination of the size and composition of multicomponent ethanol/water droplets by cavity-enhanced Raman scattering

RJ Hopkins, R Symes, RM Sayer, JP Reid*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

36 Citations (Scopus)

Abstract

Cavity-enhanced Raman scattering is used to determine the size and composition of multicomponent ethanol/water droplets in the concentration range 7.5-19% ethanol by volume. Under the experimental conditions presented here, the integrated CERS signal from ethanol shows an exponential increase with increase in ethanol concentration when compared with the integrated intensity of the water band. The calibration is shown to be invariant with particle size over the droplet radius range 20-35 mum. In addition to providing a method for determining particle size and composition, initial studies show that the evaporation dynamics of these multicomponent droplets can be probed by CERS. (C) 2003 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)665-672
Number of pages8
JournalChemical Physics Letters
Volume380
Issue number5-6
DOIs
Publication statusPublished - 28 Oct 2003

Keywords

  • MORPHOLOGY-DEPENDENT RESONANCES
  • WATER DROPLETS
  • TROPOSPHERIC AEROSOLS
  • MICRODROPLETS
  • IDENTIFICATION
  • DISTRIBUTIONS
  • EMISSION
  • DYNAMICS
  • PH

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