Crystallization of supercooled solutions
Crystallization of uniformly supercooled solutions (Na2SO4, NaCl, H2SO4, HNO3, HCl) was studied. It is shown how crystal growth velocity and habit depend on solution and concentration. The segregation coefficient for the solute in ice is measured by analysis of ice and solution, separated immediatel...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19890010293 2023-05-15T13:41:01+02:00 Crystallization of supercooled solutions Harrison, K. Hallett, John Unclassified, Unlimited, Publicly available JAN 1, 1988 http://ntrs.nasa.gov/search.jsp?R=19890010293 unknown http://ntrs.nasa.gov/search.jsp?R=19890010293 Accession ID: 89N19664 Copyright Other Sources 47 Deutscher Wetterdienst, Annals from the German Meteorological Society, No. 25: 10th International Cloud Physics Conference Preprints, Volume 1; p 180-182 1988 ftnasantrs 2012-02-15T17:49:00Z Crystallization of uniformly supercooled solutions (Na2SO4, NaCl, H2SO4, HNO3, HCl) was studied. It is shown how crystal growth velocity and habit depend on solution and concentration. The segregation coefficient for the solute in ice is measured by analysis of ice and solution, separated immediately after initial freezing, at different supercoolings. Subsequent solidification gives ion rejection at a varying rate depending on the geometry of the freezing, and may result in separation of hydrates, particularly when the initial concentration is high, as in haze (inactivated) droplets and low temperatures found in the Antarctic stratosphere. Electrical effects associated with rapid freezing are also investigated. Results suggest that more extensive measurements need to be made in solutions at different supercoolings, and that substantial electrical effects may be present for higher concentrations under these conditions. Damage to vegetation could occur under specific conditions as concentrated solutions (possibly H2SO4) are rejected in the freezing of rime or dew. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic The Antarctic Rime ENVELOPE(6.483,6.483,62.567,62.567) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
47 |
spellingShingle |
47 Harrison, K. Hallett, John Crystallization of supercooled solutions |
topic_facet |
47 |
description |
Crystallization of uniformly supercooled solutions (Na2SO4, NaCl, H2SO4, HNO3, HCl) was studied. It is shown how crystal growth velocity and habit depend on solution and concentration. The segregation coefficient for the solute in ice is measured by analysis of ice and solution, separated immediately after initial freezing, at different supercoolings. Subsequent solidification gives ion rejection at a varying rate depending on the geometry of the freezing, and may result in separation of hydrates, particularly when the initial concentration is high, as in haze (inactivated) droplets and low temperatures found in the Antarctic stratosphere. Electrical effects associated with rapid freezing are also investigated. Results suggest that more extensive measurements need to be made in solutions at different supercoolings, and that substantial electrical effects may be present for higher concentrations under these conditions. Damage to vegetation could occur under specific conditions as concentrated solutions (possibly H2SO4) are rejected in the freezing of rime or dew. |
format |
Other/Unknown Material |
author |
Harrison, K. Hallett, John |
author_facet |
Harrison, K. Hallett, John |
author_sort |
Harrison, K. |
title |
Crystallization of supercooled solutions |
title_short |
Crystallization of supercooled solutions |
title_full |
Crystallization of supercooled solutions |
title_fullStr |
Crystallization of supercooled solutions |
title_full_unstemmed |
Crystallization of supercooled solutions |
title_sort |
crystallization of supercooled solutions |
publishDate |
1988 |
url |
http://ntrs.nasa.gov/search.jsp?R=19890010293 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(6.483,6.483,62.567,62.567) |
geographic |
Antarctic The Antarctic Rime |
geographic_facet |
Antarctic The Antarctic Rime |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19890010293 Accession ID: 89N19664 |
op_rights |
Copyright |
_version_ |
1766144459778555904 |