Accurate absolute measurements of the Raman backscattering differential cross-section of water and ice and its dependence on the temperature and excitation wavelength

Plakhotnik, Taras and Reichardt, Jens (2017) Accurate absolute measurements of the Raman backscattering differential cross-section of water and ice and its dependence on the temperature and excitation wavelength. Journal of Quantitative Spectroscopy and Radiative Transfer, 194 58-64. doi:10.1016/j.jqsrt.2017.03.023

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Author Plakhotnik, Taras
Reichardt, Jens
Title Accurate absolute measurements of the Raman backscattering differential cross-section of water and ice and its dependence on the temperature and excitation wavelength
Journal name Journal of Quantitative Spectroscopy and Radiative Transfer   Check publisher's open access policy
ISSN 0022-4073
1879-1352
Publication date 2017-06-01
Year available 2017
Sub-type Article (original research)
DOI 10.1016/j.jqsrt.2017.03.023
Open Access Status File (Author Post-print)
Volume 194
Start page 58
End page 64
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Abstract Measurements of Raman backscattering spectra between -15 C-omicron and 22 C-omicron in liquid water (including its supercooled state) and in polycrystalline ice (-35 C-omicron to 0 C-omicron) at two excitation wavelengths (407 and 532 nm) are presented. It is found that the spectrum-integrated backscattering cross-section of the 3400 cm(-1) band is about 1.2 times larger for ice in comparison to liquid water. The excitation-wavelength dependence of the cross-section in ice is very close to that in water. A discontinuous change of the spectrum is observed upon phase transition at 0 C-omicron. The results are applicable to preliminary calibration of lidar systems designed for water content surveys in the atmosphere. (C) 2017 Elsevier Ltd. All rights reserved.
Formatted abstract
Measurements of Raman backscattering spectra between −15 °C and 22 °C in liquid water (including its supercooled state) and in polycrystalline ice (−35 °C to 0 °C) at two excitation wavelengths (407 and 532 nm) are presented. It is found that the spectrum-integrated backscattering cross-section of the 3400 cm−1 band is about 1.2 times larger for ice in comparison to liquid water. The excitation-wavelength dependence of the cross-section in ice is very close to that in water. A discontinuous change of the spectrum is observed upon phase transition at 0 °C. The results are applicable to preliminary calibration of lidar systems designed for water content surveys in the atmosphere.
Keyword Cross-section
Ice
Phase transition
Raman backscattering
Water
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID DP0771676
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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