Interaction of Point Defects in Ice
Abstract The interaction of point detects in ice has been neglected for a long time. Experimental data obtained from dielectric measurements on HF-doped crystals stimulated a new evaluation of the possibility of an interaction between Bjerrum defects and ions. In a previous paper it has been shown t...
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Language: | English |
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Cambridge University Press (CUP)
1978
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Online Access: | http://dx.doi.org/10.1017/s0022143000033359 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000033359 |
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crcambridgeupr:10.1017/s0022143000033359 2024-03-03T08:46:01+00:00 Interaction of Point Defects in Ice Bilgram, J. H. Gränicher, H. 1978 http://dx.doi.org/10.1017/s0022143000033359 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000033359 en eng Cambridge University Press (CUP) Journal of Glaciology volume 21, issue 85, page 115-122 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1978 crcambridgeupr https://doi.org/10.1017/s0022143000033359 2024-02-08T08:34:04Z Abstract The interaction of point detects in ice has been neglected for a long time. Experimental data obtained from dielectric measurements on HF-doped crystals stimulated a new evaluation of the possibility of an interaction between Bjerrum defects and ions. In a previous paper it has been shown that this leads us to assume the existence of aggregates of Bjerrum defects and ions. In this paper these aggregates and Bjerrum defects are used to explain the dielectric properties of ice, especially the temperature dependence of the product of the high and low frequency conductivity σ 0 σ ∞ . The interaction of Bjerrum defects and impurity molecules leads to a dependence of the concentration of frenkel pairs on Bjerrum-defect concentration. At HF concentrations above the native Bjerrum-defect concentration the formation of a Frenkel pair is enhanced. This leads to the fast out-diffusion which has been studied in highly doped crystals by means of NMR techniques. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 21 85 115 122 |
institution |
Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Bilgram, J. H. Gränicher, H. Interaction of Point Defects in Ice |
topic_facet |
Earth-Surface Processes |
description |
Abstract The interaction of point detects in ice has been neglected for a long time. Experimental data obtained from dielectric measurements on HF-doped crystals stimulated a new evaluation of the possibility of an interaction between Bjerrum defects and ions. In a previous paper it has been shown that this leads us to assume the existence of aggregates of Bjerrum defects and ions. In this paper these aggregates and Bjerrum defects are used to explain the dielectric properties of ice, especially the temperature dependence of the product of the high and low frequency conductivity σ 0 σ ∞ . The interaction of Bjerrum defects and impurity molecules leads to a dependence of the concentration of frenkel pairs on Bjerrum-defect concentration. At HF concentrations above the native Bjerrum-defect concentration the formation of a Frenkel pair is enhanced. This leads to the fast out-diffusion which has been studied in highly doped crystals by means of NMR techniques. |
format |
Article in Journal/Newspaper |
author |
Bilgram, J. H. Gränicher, H. |
author_facet |
Bilgram, J. H. Gränicher, H. |
author_sort |
Bilgram, J. H. |
title |
Interaction of Point Defects in Ice |
title_short |
Interaction of Point Defects in Ice |
title_full |
Interaction of Point Defects in Ice |
title_fullStr |
Interaction of Point Defects in Ice |
title_full_unstemmed |
Interaction of Point Defects in Ice |
title_sort |
interaction of point defects in ice |
publisher |
Cambridge University Press (CUP) |
publishDate |
1978 |
url |
http://dx.doi.org/10.1017/s0022143000033359 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000033359 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 21, issue 85, page 115-122 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000033359 |
container_title |
Journal of Glaciology |
container_volume |
21 |
container_issue |
85 |
container_start_page |
115 |
op_container_end_page |
122 |
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1792501832074919936 |