Relationship between microstructure and efficiency of lithium silicate scintillating glasses: The effect of alkaline earths

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Lithium silicate glasses containing Ce{sup 3+} are known to be scintillators. Glasses in this family in which the Li is enriched ({sup 6}Li) are used as neutron detectors. The addition of Mg to this glass is known to increase the scintillation efficiency. We have found that substituting other alkaline earths results in a monotonic decrease of the scintillation efficiency with increasing atomic number. The total variation in scintillation efficiency from Mg to Ba is nearly a factor of 3. Prior experiments with this glass family show small differences in Raman and fluorescence spectra; evidence from thermoluminescence experiments indicates that the ... continued below

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8 p.

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Bliss, M.; Craig, R.A.; Sunberg, D.S. & Weber, M.J. May 1, 1995.

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  • Pacific Northwest Laboratory
    Publisher Info: Pacific Northwest Lab., Richland, WA (United States)
    Place of Publication: Richland, Washington

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Description

Lithium silicate glasses containing Ce{sup 3+} are known to be scintillators. Glasses in this family in which the Li is enriched ({sup 6}Li) are used as neutron detectors. The addition of Mg to this glass is known to increase the scintillation efficiency. We have found that substituting other alkaline earths results in a monotonic decrease of the scintillation efficiency with increasing atomic number. The total variation in scintillation efficiency from Mg to Ba is nearly a factor of 3. Prior experiments with this glass family show small differences in Raman and fluorescence spectra; evidence from thermoluminescence experiments indicates that the scintillation efficiency is most strongly correlated with structural effects in the neighborhood of the Ce{sup 3+} activator ion. The results of low-temperature studies of fluorescence and thermoluminescence of these glasses will be reported.

Physical Description

8 p.

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OSTI as DE95016812

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  • 97. American Ceramic Society (ACS) annual meeting and exposition, Cincinnati, OH (United States), 1-4 May 1995

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  • Other: DE95016812
  • Report No.: PNL-SA--25396
  • Report No.: CONF-9505249--8
  • Grant Number: AC06-76RL01830
  • Office of Scientific & Technical Information Report Number: 100322
  • Archival Resource Key: ark:/67531/metadc622068

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  • May 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • April 7, 2016, 3:04 p.m.

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Bliss, M.; Craig, R.A.; Sunberg, D.S. & Weber, M.J. Relationship between microstructure and efficiency of lithium silicate scintillating glasses: The effect of alkaline earths, article, May 1, 1995; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc622068/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.