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Two-Step Vapor/Liquid/Solid PurificationVertical distillation system combines in single operation advantages of multiple zone refining with those of distillation. Developed specifically to load Bridgman-Stockbarger (vertical-solidification) growth ampoules with ultrapure tellurium and cadmium, system, with suitable modifications, serves as material refiner. In first phase of purification process, ampoule heated to drive off absorbed volatiles. Second phase, evaporator heated to drive off volatiles in charge. Third phase, slowly descending heater causes distillation from evaporator to growing crystal in ampoule.
Document ID
19860000495
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Holland, L. R.
(University of Alabama, Huntsville)
Date Acquired
August 12, 2013
Publication Date
November 1, 1986
Publication Information
Publication: NASA Tech Briefs
Volume: 10
Issue: 6
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
MFS-26004
Accession Number
86B10495
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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