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The Nucleation of Ice in Supercooled D<sub>2</sub>O and H<sub>2</sub>O

Kabath, P. and Stöckel, P. and Lindiger, A. and Baumgärtel, H. (2006) The Nucleation of Ice in Supercooled D<sub>2</sub>O and H<sub>2</sub>O. Journal of Molecular Liquids, 125 (2-3), pp. 204-211. Elsevier. DOI: 10.1016/j.molliq.2005.11.025 ISSN 0167-7322

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Abstract

The homogeneous nucleation rates of light and heavy water have been measured in supercooled levitated micro-droplets at different temperatures using a temperature jump experiment. Homogeneous nucleation times of ice in supercooled water follow the Poisson statistics. The nucleation rate has a negative temperature coefficient; it increases strongly with decreasing temperature. At the same degree of supercooling, the nucleation in heavy water is faster than in light water. The discussion of the experimental results is based on kinetic arguments in the frame of a two-state model of liquid water. The homogeneous nucleation rate J is tantamount to a volume-normalized apparent first-order rate constant J* which can be described by the product of the genuine rate constant j and an overall equilibrium constant K. K describes a large number of pre-equilibria, which are coupled to the rate-determining step of nucleation and influence the apparent nucleation rate J of formation of the critical germ.

Item URL in elib:https://elib.dlr.de/45198/
Document Type:Article
Title:The Nucleation of Ice in Supercooled D<sub>2</sub>O and H<sub>2</sub>O
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kabath, P.UNSPECIFIEDUNSPECIFIED
Stöckel, P.Böhringer Ingelheim Pharma GmbHUNSPECIFIED
Lindiger, A.Institut für Experimentalphysik, FU BerlinUNSPECIFIED
Baumgärtel, H.Institut für physikalische und theoretische Chemie, FU BerlinUNSPECIFIED
Date:2006
Journal or Publication Title:Journal of Molecular Liquids
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:125
DOI :10.1016/j.molliq.2005.11.025
Page Range:pp. 204-211
Publisher:Elsevier
ISSN:0167-7322
Status:Published
Keywords:Nucleation, D2O, H2O
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben Extrasolare Planeten (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Extrasolar Planets and Atmospheres
Deposited By: Hedelt, Pascal
Deposited On:04 Feb 2008
Last Modified:14 Jan 2010 23:39

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