THE PRODUCTION OF LiF SINGLE CRYSTALS WITH SELECTED ISOTOPIC RATIOS OF LITHIUM

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Techniques and apparatus were developed to produce single crystals of LiF with selected ratios of the lithium isotopes containing not more than a few parts per million impurities. The starting material was prepared from purified aqueous solutions of LiOH and HF and was dehydrated in the molten state with anhydrous HF. The dehydrated LiF was then converted into a singie crystal in a unique Stockbarger furnace which has a window allowing visual monitoring of the crystal growth and variable electrical shunts making possible the application or removal of thermal gradients at will. Crystals weighing several hundred grams and containing 99.99, ... continued below

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Pages: 47

Creation Information

Weaver, C.F.; Ross, R.G.; Sturm, B.J.; Eorgan, J.E. & Thoma, R.E. March 1, 1964.

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Techniques and apparatus were developed to produce single crystals of LiF with selected ratios of the lithium isotopes containing not more than a few parts per million impurities. The starting material was prepared from purified aqueous solutions of LiOH and HF and was dehydrated in the molten state with anhydrous HF. The dehydrated LiF was then converted into a singie crystal in a unique Stockbarger furnace which has a window allowing visual monitoring of the crystal growth and variable electrical shunts making possible the application or removal of thermal gradients at will. Crystals weighing several hundred grams and containing 99.99, 98.06, and 96.50 at.% lithium-7 have been produced as part of a sequence which will include crystals do not display strain under polarized light and do not show OH/sup -/ absorption of infrared radiation. The purest crystals produced contain less than 1 ppm cationic impurities according to the results of emission spectroscopy and neutron activation analysis. (auth)

Physical Description

Pages: 47

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  • Other Information: Orig. Receipt Date: 31-DEC-64

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  • Report No.: ORNL-3341
  • Grant Number: W-7405-ENG-26
  • DOI: 10.2172/4082229 | External Link
  • Office of Scientific & Technical Information Report Number: 4082229
  • Archival Resource Key: ark:/67531/metadc870660

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • March 1, 1964

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

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  • Nov. 3, 2016, 6:30 p.m.

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Weaver, C.F.; Ross, R.G.; Sturm, B.J.; Eorgan, J.E. & Thoma, R.E. THE PRODUCTION OF LiF SINGLE CRYSTALS WITH SELECTED ISOTOPIC RATIOS OF LITHIUM, report, March 1, 1964; Tennessee. (digital.library.unt.edu/ark:/67531/metadc870660/: accessed November 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.