Temperature measurement of single evaporating water droplets in a nitrogen flow using spontaneous Raman scattering

Temperature measurement of single evaporating water droplets in a nitrogen flow using spontaneous Raman scattering

The evaporation dynamics of stationary water droplets held within an electrodynamic trap are investigated in a nitrogen flow of variable velocity. In particular, the influence of the nitrogen gas flow on the temperature of the evaporating water droplets is studied. By applying a contact free measure...

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Veröffentlicht in:Physical chemistry chemical physics : PCCP 2009-01, Vol.11 (42), p.9720-9728
Hauptverfasser: HEINISCH, Christian, WILLS, Jon B, REID, Jonathan P, TSCHUDI, Theo, TROPEA, Cameron
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Exact sciences and technology
General and physical chemistry
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container_end_page 9728
container_issue 42
container_start_page 9720
container_title Physical chemistry chemical physics : PCCP
container_volume 11
creator HEINISCH, Christian
WILLS, Jon B
REID, Jonathan P
TSCHUDI, Theo
TROPEA, Cameron
description The evaporation dynamics of stationary water droplets held within an electrodynamic trap are investigated in a nitrogen flow of variable velocity. In particular, the influence of the nitrogen gas flow on the temperature of the evaporating water droplets is studied. By applying a contact free measurement technique, based on spontaneous Raman scattering, time averaged and time resolved measurements of temperature in the droplet volume are compared. This technique determines the temperature from an intensity ratio in the OH stretching band of the Stokes-Raman scattering after calibration. The measured trends in temperature over the first 5 s of evaporation are found to be in agreement with theoretical calculations of the heat and mass transfer rates.
doi_str_mv 10.1039/b908555f
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subjects Chemistry
Exact sciences and technology
General and physical chemistry
title Temperature measurement of single evaporating water droplets in a nitrogen flow using spontaneous Raman scattering
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