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The Surface Diffusion Length of Water Molecules on Faceted Ice: A Reanalysis of “Roles of Surface/Volume Diffusion in the Growth Kinetics of Elementary Spiral Steps on Ice Basal Faces Grown from Water Vapor, by Asakawa et al

Libbrecht, Kenneth G. (2015) The Surface Diffusion Length of Water Molecules on Faceted Ice: A Reanalysis of “Roles of Surface/Volume Diffusion in the Growth Kinetics of Elementary Spiral Steps on Ice Basal Faces Grown from Water Vapor, by Asakawa et al. . (Submitted) http://resolver.caltech.edu/CaltechAUTHORS:20160201-152804474

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Abstract

We reanalyzed the measurements made by Asakawa et al. [1] of the growth velocities of single-molecule-high steps on basal ice surfaces, as we believe the authors made a number of incorrect assumptions regarding ice growth parameters and bulk diffusion in their experiments. Applying what we believe are more accurate assumptions, we used the data in [1] to derive a surface diffusion length of x_s ≈ 10 nm for water molecules on basal ice surfaces at T = −8.4 C, about 500 times lower than what was reported in [1]. Moreover, in our analysis we found that no information about the height of the Ehrlich-Schwoebel barrier could be obtained from these measurements.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1509.06609arXivDiscussion Paper
ORCID:
AuthorORCID
Libbrecht, Kenneth G.0000-0002-8744-3298
Additional Information:Submitted on 22 Sep 2015.
Record Number:CaltechAUTHORS:20160201-152804474
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160201-152804474
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:64141
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:03 Feb 2016 00:28
Last Modified:03 Feb 2016 00:28

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