Observations of the growth and sublimation of water ice films by variable-energy positron annihilation spectroscopy

S. Townrow; P.G. Coleman; Y.C. Wu; J. Jiang; S.J. Wang

doi:10.1088/1742-6596/443/1/012058

Observations of the growth and sublimation of water ice films by variable-energy positron annihilation spectroscopy

S. Townrow, P.G. Coleman, Y.C. Wu, J. Jiang, S.J. Wang

Department of Physics

Wuhan University

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Abstract

The near-surface structure of thin vapor-deposited water ice films during formation and sublimation in vacuum has been probed using in-situ positron annihilation spectroscopy. While amorphous solid water films prepared at 120K are highly dense with low porosity micro- and interconnected meso-pores have been observed in the top few tens of nm of ice films prepared at temperature of 170-180K as the films are forming and during sublimation. Responses to these near-surface pores are much more pronounced in films grown at 170-180K than in those grown at lower temperatures.

Original language	English
Article number	012058
Number of pages	4
Journal	Journal of Physics: Conference Series
Volume	443
Issue number	1
Early online date	10 Jun 2013
DOIs	https://doi.org/10.1088/1742-6596/443/1/012058
Publication status	Published - 2013
Event	16th International Conference on Positron Annihilation - Bristol, UK United Kingdom Duration: 19 Aug 2012 → 24 Aug 2012

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10.1088/1742-6596/443/1/012058

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title = "Observations of the growth and sublimation of water ice films by variable-energy positron annihilation spectroscopy",

abstract = "The near-surface structure of thin vapor-deposited water ice films during formation and sublimation in vacuum has been probed using in-situ positron annihilation spectroscopy. While amorphous solid water films prepared at 120K are highly dense with low porosity micro- and interconnected meso-pores have been observed in the top few tens of nm of ice films prepared at temperature of 170-180K as the films are forming and during sublimation. Responses to these near-surface pores are much more pronounced in films grown at 170-180K than in those grown at lower temperatures.",

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T1 - Observations of the growth and sublimation of water ice films by variable-energy positron annihilation spectroscopy

AU - Townrow, S.

AU - Coleman, P.G.

AU - Wu, Y.C.

AU - Jiang, J.

AU - Wang, S.J.

PY - 2013

Y1 - 2013

N2 - The near-surface structure of thin vapor-deposited water ice films during formation and sublimation in vacuum has been probed using in-situ positron annihilation spectroscopy. While amorphous solid water films prepared at 120K are highly dense with low porosity micro- and interconnected meso-pores have been observed in the top few tens of nm of ice films prepared at temperature of 170-180K as the films are forming and during sublimation. Responses to these near-surface pores are much more pronounced in films grown at 170-180K than in those grown at lower temperatures.

AB - The near-surface structure of thin vapor-deposited water ice films during formation and sublimation in vacuum has been probed using in-situ positron annihilation spectroscopy. While amorphous solid water films prepared at 120K are highly dense with low porosity micro- and interconnected meso-pores have been observed in the top few tens of nm of ice films prepared at temperature of 170-180K as the films are forming and during sublimation. Responses to these near-surface pores are much more pronounced in films grown at 170-180K than in those grown at lower temperatures.

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Observations of the growth and sublimation of water ice films by variable-energy positron annihilation spectroscopy

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Positron Beam Spectroscopy of Ice Films

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Observations of the growth and sublimation of water ice films by variable-energy positron annihilation spectroscopy

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Positron Beam Spectroscopy of Ice Films

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