Desorption activation energies for tritium release from ceramic breeders

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Desorption has been identified as an important process in determining the kinetics of tritium release from ceramic tritium breeder materials considered for use in fusion reactors. However, details of the desorption of tritium from ceramic materials are mostly unknown. Models of tritium release have treated desorption as a simple process with desorption occurring from one type of site with one activation energy. Recent measurements of the rates of water uptake by LiAlO/sub 2/, and evolution of water from LiAlO/sub 2/ exposed to water, indicate the presence of multiple types of desorption sites. Estimates of desorption activation energies were obtained from ... continued below

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Pages: 20

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Kopasz, J.P.; Fischer, A.K. & Johnson, C.E. January 1, 1989.

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Description

Desorption has been identified as an important process in determining the kinetics of tritium release from ceramic tritium breeder materials considered for use in fusion reactors. However, details of the desorption of tritium from ceramic materials are mostly unknown. Models of tritium release have treated desorption as a simple process with desorption occurring from one type of site with one activation energy. Recent measurements of the rates of water uptake by LiAlO/sub 2/, and evolution of water from LiAlO/sub 2/ exposed to water, indicate the presence of multiple types of desorption sites. Estimates of desorption activation energies were obtained from these data and from data in the literature suggesting multiple types of desorption sites for desorption from Li/sub 2/O and Li/sub 4/SiO/sub 4/. 15 refs., 4 figs.

Physical Description

Pages: 20

Notes

NTIS, PC A03/MF A01 - OSTI; 1.

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  • Symposium on fabrication and properties of lithium ceramics, Indianapolis, IN, USA, 24 Apr 1989

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  • Other: DE89014667
  • Report No.: CONF-8904215-3
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 6245863
  • Archival Resource Key: ark:/67531/metadc1111475

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  • January 1, 1989

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

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  • April 19, 2018, 4:05 p.m.

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Kopasz, J.P.; Fischer, A.K. & Johnson, C.E. Desorption activation energies for tritium release from ceramic breeders, article, January 1, 1989; Illinois. (digital.library.unt.edu/ark:/67531/metadc1111475/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.