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Characterization of directionally solidified lead chlorideA directionally solidified PbCl2 material was prepared and analyzed and subsequently used to grow single crystals. It was found that silicon, halogens, sulfur, magnesium, and phosphorus were the hardest impurities to remove by the single-pass directional freezing. Single crystals grown from the purified material displayed good scattering beam quality and showed no absorption peaks between 0.30 to 20 microns. Direct photographic observations of the solid-liquid interface at several G/V (denoting the temperature gradient and the translation velocity, respectively) ratio values showed that, as the G/V ratio decreased, the interface varied from a smooth convex surface to dendritic.
Document ID
19880055943
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Singh, Narsingh Bahadur
(Westinghouse Research and Development Center Pittsburgh, PA, United States)
Duval, W. M. B.
(Westinghouse Research and Development Center Pittsburgh, PA, United States)
Rosenthal, B. N.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 13, 2013
Publication Date
June 1, 1988
Publication Information
Publication: Journal of Crystal Growth
Volume: 89
Issue: 1, Ju
ISSN: 0022-0248
Subject Category
Materials Processing
Accession Number
88A43170
Distribution Limits
Public
Copyright
Other

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