Tritium removal from various lithium aluminates irradiated by fast and thermal neutrons (COMPLIMENT experiment)

C. Alvani, P.L. Carconi, S. Casadio, A. Moauro

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Abstract

Within the frame of the COMPLIMENT experiment, γ-LiAlO2specimens with different microstructures (grain size distributions) were tested in the same environmental conditions to compare the effects caused by6Li(n, α)T reaction and by fast neutron scattering, the damaging dose being held at about the same level (1.6-1.8 dpa). The tritium retention times were obtained by the tritium removal of isothermal annealing under He + 0.1% H2sweeping gas. In spite of the different Li burnups (2.5% and 0.25%) and the residual tritium concentrations which were found in the irradiated specimens (4.3 Ci/g and 0.09 Ci/g, respectively, for specimens held at 450°C during the irradiations), the kinetics of tritium removal was not found to be discriminated by the two different irradiations. Moreover, the results were found to agree with those previously obtained by the "in-situ" TEQUILA experiment, performed on the same type of Li ceramics. Hence, the apparent first order desorption mechanism has been confirmed to control the kinetics of tritium removal from the porous fine grain γ-LiAlO2ceramics. © 1994.
Original languageEnglish
Pages (from-to)259 - 265
Number of pages7
JournalJournal of Nuclear Materials
Volume208
Issue number3
DOIs
Publication statusPublished - 1994
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

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