Tritium diffusion and desorption in single crystal LiAlO[sub 2]

Conference · Wed Jan 01 00:00:00 EST 1992

OSTI ID:7368462

Kopasz, J P; Seils, C A; Johnson, C E

In an attempt to determine the diffusivity of tritium in lithium aluminate, we have performed isothermal anneal tests on single crystal samples (approximately 1.5 mm dia.). Large single crystals were used to minimize the contributions from desorption. Diffusion kinetics become more dominant as the crystal radius increases due to the decreasing surface area to volume ratio. However, the release may still be in the mixed diffusion-desorption regime which would make obtaining the rate constants from the time dependence of the tritium release difficult. Therfore, we have decided to section the samples and determine the diffusivity from the tritium concentration profile within the sample. In addition, in an attempt to understand the effects of impurities on the tritium transport, we have studied the tritium profiles in pure and Mg doped (0.3%) LiAlO[sub 2].

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7368462
• Report Number(s): ANL/CMT/CP-79667; CONF-9210255-2; ON: DE93015140
• Resource Relation: Conference: International workshop on ceramic breeder blanket interactions, Tokyo (Japan), 26-29 Oct 1992
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Fu
36 MATERIALS SCIENCE
TRITIUM
DESORPTION
DIFFUSION
ALUMINIUM OXIDES
BREEDING BLANKETS
CERAMICS
LITHIUM COMPOUNDS
TEMPERATURE DEPENDENCE
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHALCOGENIDES
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
RADIOISOTOPES
REACTOR COMPONENTS
SORPTION
YEARS LIVING RADIOISOTOPES
700450* - Fusion Technology- Blankets & Cooling Systems- (1992-)
700460 - Fusion Technology- Heating & Fueling Systems
Fuels- (1992)
360606 - Other Materials- Physical Properties- (1992-)