Tritium release from lithium silicate pebbles produced from lithium hydroxide

Munakata, Kenzo; Shinozaki, Takashi; Inoue, Keita; Kajii, Shunsaku; Shinozaki, Yuichi; Knitter, Regina; Bekris, N.; Fujii, Toshiyuki; Yamana, Hideaki; Okuno, Kenji

doi:10.1016/j.fusengdes.2008.05.039

Cited by 35 publications

(8 citation statements)

References 4 publications

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“…This value is close to 3.2% which is the value so far considered [3,5]. However, it is important to underline that recent experiments performed in Japan on tritium release from Li 4 SiO 4 pebbles show that tritium is mainly released as HTO [6].…”

Section: High Duty Dt Phasesupporting

confidence: 75%

Conceptual design of Tritium Extraction System for the European HCPB Test Blanket Module

Ciampichetti

Nitti

Aiello

et al. 2012

Fusion Engineering and Design

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Section: High Duty Dt Phasesupporting

confidence: 75%

Conceptual design of Tritium Extraction System for the European HCPB Test Blanket Module

Ciampichetti

Nitti

Aiello

et al. 2012

Fusion Engineering and Design

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“…In this research, the capsule containing the specimens was broken on-line without transferring the specimens from the capsule to the reactor tube as in Ref. [6]. Thus, tritium would remain in the capsule until flushing into the experimental system when the capsule was broken on-line.…”

Section: Resultsmentioning

confidence: 99%

“…The irradiation time of the specimens was 100 min. The amount of tritium produced during neutron irradiation was estimated to be roughly 2.16 MBq (58.4 lCi), which was calculated based on the natural abundance of 6 Li and the reported standard irradiation conditions for the reactor. In the computation, shielding effects by the capsule and a protective tube were not taken into account.…”

Section: Methodsmentioning

confidence: 99%

Out-of-pile tritium release study on Li4SiO4 pebbles from TRINPC-I experiments

Kang

Wang

Xiao

et al. 2011

Journal of Nuclear Materials

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“…Subsequent to drying, 500 mg samples of powders were uniaxially pressed at ~293 MPa into 10 mm diameter pellets and calcined at 900°C using a heating rate of 2°/min. The firing temperature of 900°C represents typical operation parameters likely to be encountered in HCPB applications [41].…”

Section: Methodsmentioning

confidence: 99%

Solution based synthesis of mixed-phase materials in the Li2TiO3–Li4SiO4 system

Hanaor

Kolb

Gan

et al. 2015

Journal of Nuclear Materials

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Abstract:As candidate tritium breeder materials for use in the ITER helium cooled pebble bed, ceramic multiphasic compounds lying in the region of the quasi-binary lithium metatitanate-lithium orthosilicate system may exhibit mechanical and physical advantages relative to single phase materials. Here we present an organometallic solution-based synthesis procedure for the low-temperature fabrication of compounds in the Li 2 TiO 3 -Li 4 SiO 4 region and investigate phase stability and transformations through temperature varied X-ray diffraction and scanning calorimetry. Results demonstrate that the metatitanate and metasilicate phases Li 2 TiO 3 and Li 2 SiO 3 readily crystallise in nanocrystalline form at temperatures below 180°C. Lithium deficiency in the region of 5% results from Li sublimation from Li 4 SiO 4 and/or from excess Li incorporation in the metatitanate phase and brings about a stoichiometry shift and product compounds with mixed lithium orthosilicate/ metasilicate content towards the Si rich region and predominantly Li 2 TiO 3 content towards the Ti rich region. Above 1150°C the transformation of monoclinic to cubic γ-Li 2 TiO 3 disordered solid-solution occurs while the melting of silicate phases indicates a likely monotectic type system with a solidus line in the region 1050°-1100°C. Synthesis procedures involving a lithium chloride precursor are not likely to be a viable option for breeder pebble synthesis as this route was found to yield materials with a more significant Li-deficiency exhibiting the crystallisation of the Li 2 TiSiO 5 phase at intermediate compositions.

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Tritium release from lithium silicate pebbles produced from lithium hydroxide

Cited by 35 publications

References 4 publications

Conceptual design of Tritium Extraction System for the European HCPB Test Blanket Module

Conceptual design of Tritium Extraction System for the European HCPB Test Blanket Module

Out-of-pile tritium release study on Li4SiO4 pebbles from TRINPC-I experiments

Solution based synthesis of mixed-phase materials in the Li2TiO3–Li4SiO4 system

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