Dual-Wavelength Raman Spectroscopy Approach for Studying Fluid-Phase Equilibria Using a Single Laser

Johannes Kiefer*

*Corresponding author for this work

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A novel Raman spectroscopy setup for the investigation of multiphase fluid mixtures is proposed. The total output of a frequency-doubled Nd:YAG laser is separated into a strong 532 nm beam for generating Raman signals in the vapor phase and the weak residual of the fundamental 1064 nm radiation to be utilized as laser source for Raman scattering in the liquid phase. This approach will provide sufficient signal intensity from the gas (despite low density) for determination of mixture composition and at the same time it facilitates recording high-resolution spectra from the liquid in order to allow studying molecular physics phenomena together with concentration measurements.

Original languageEnglish
Pages (from-to)687-689
Number of pages3
JournalApplied Spectroscopy
Volume64
Issue number6
DOIs
Publication statusPublished - Jun 2010

Keywords

  • Raman spectroscopy
  • Fluid phase equilibria
  • Intermolecular interactions
  • Concentration measurement
  • Ionic liquids
  • Scattering
  • Mixtures
  • Ethanol

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