Out of pile tritium release behaviour and microscopic investigation of lithium metatitanate irradiated in the High Flux Reactor in Petten

Til, S. van; Magielsen, A.J.; Stijkel, M.P.; Cobussen, H.L.

doi:10.1016/j.fusengdes.2010.02.022

Cited by 7 publications

(1 citation statement)

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“…Moreover an additional factor, which has to be considered when studying T behaviour in irradiated materials, is the evolution of the microstructure during irradiation with energetic ions, neutrons and electrons [5]. A good number of in situ T release experiments testing several different irradiated materials have been carried out at different laboratories [6][7][8][9], the conclusions being that processes involved in the annihilation of radiation defects seem to play an important role to establish the T recovering system and the release behaviour.…”

Section: Introductionmentioning

confidence: 99%

D-depth profiling in as-implanted and annealed Li-based breeder blanket ceramics

Carella

González

González-Arrabal

2013

Journal of Nuclear Materials

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HIGHLIGHTS• Three solid breeder blanket candidates were D-implanted and characterized by NRA at different annealing temperatures.• Lithium containing silicate and titanate ceramics with ratio 2Li:Si, 3Li:Si and lLi:Ti were fabricated.• The fabricated ceramics exhibit different porosity, grain size and density.• The ceramics were implanted with D: a complete outgas was observed at T > 200 °C.• Surface is crucial for the release kinetics and grain boundaries represent an alternative path to porous for diffusion. ABSTRACTIn future power plants (i.e. DEMO), the nuclear fusion of hydrogen isotopes will be used for energy production. The behaviour of hydrogen isotopes in lithium-enriched ceramics for breeder blankets (BBs) is one of the most important items to be understood.In this paper we present the chemical, microstructural and morphological features of Li 4 Si0 4 , Li 2 Ti0 3 and a third ceramic candidate with a higher Li:Si proportion (3:1), implanted with D at an energy of 100 keV and at room temperature at a fluence of 1 x 10 17 cm 2 . The D depth-profile in as-implanted and annealed ceramics (at T < 200 °C) was characterised by Resonance Nuclear Reaction Analysis (RNRA). The RNRA data indicate that the total amount of D is retained at room temperature, while annealing at 100 °C promotes D release and annealing at T > 150 °C drives D to completely desorb from all the studied ceramics. D release will be discussed as a function of the microstructurural and morphological features of each material.

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Section: Introductionmentioning

confidence: 99%