Investigation of hydrogen isotopes interaction with lithium CPS under reactor irradiation

Kulsartov, T.; Tazhibayeva, I.; Ponkratov, Yu.V.; Gordienko, Yuriy; Zaurbekova, Zhanna; Baklanov, Viktor; Chikhray, Y.; Skakov, Маzhyn; Koyanbayev, Ye.; Korovikov, A.; Нестеров, Е. А.

doi:10.1016/j.fusengdes.2017.03.135

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…Materials science studies conducted as part of the implementation of international programs for the creation of fusion reactors ITER and DEMO have shown that one of the best materials for use as an PFM (plasma-facing material) [1] in controlled fusion plants is liquid lithium and materials based on it [2,3,4]. The use of liquid lithium as a plasma-facing material is especially promising if lithium is enclosed in a so-called capillary-porous system (CPS) [5,6].Currently, there are many studies in the world conducted with lithium CPS, which once again confirms the interest in this material [7,8,9,10,11,12,13].Work on this topic is also being carried out at the Kazakhstan Materials Science Tokamak KTM [14,15,16,17,18,19,20]. The installation is currently the only tokamak in the world designed to solve problems in the field of thermonuclear materials science.…”

Section: Introductionmentioning

confidence: 95%

Tests of lithium CPS on basis of carboxylic fabric, reinforced with carbon nanotubes under high thermal and radiation loads

Tulubayev

Ponkratov

Baklanov

et al. 2022

J. Phys.: Conf. Ser.

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This work is devoted to testing a lithium CPS based on carbon fabric reinforced with carbon nanotubes under conditions of thermal and radiation loads. The paper considers and analyzes: the properties of carbon nanotubes and methods of their synthesis, the nature of the interaction of carbon materials with liquid lithium at different temperatures. A description of all the main stages in the manufacture of lithium CPS based on carbon fabric reinforced with carbon nanotubes is given. Microstructural studies of a manufactured lithium CPS sample based on carbon fabric reinforced with carbon nanotubes are presented. Studies have shown that a carbon fabric with a fiber surface reinforced with carbon nanotubes is completely wetted by liquid lithium. The developed technology is fully suitable for the manufacture of lithium CPS samples for further research. The results of experiments on the interaction of lithium CPS based on graphite fabric reinforced with carbon nanotubes with hydrogen isotopes under thermal and radiation loads are presented.

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Section: Introductionmentioning

confidence: 95%

Tests of lithium CPS on basis of carboxylic fabric, reinforced with carbon nanotubes under high thermal and radiation loads

Tulubayev

Ponkratov

Baklanov

et al. 2022

J. Phys.: Conf. Ser.

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“…For example, it is known that hydrogen isotopes can be largely absorbed by liquid Li due to their strong chemical affinity with Li atoms. [32][33][34][35] In contrast, the low reactivity of Sn with hydrogen isotopes leads to a small retention ratio of hydrogen isotopes in liquid Sn. 18 It is intuitively expected that D atoms can be trapped by Li atoms in liquid Li-Sn eutectic, resulting in a higher number of retained hydrogen isotopes in liquid Li-Sn than liquid Sn.…”

Section: Introductionmentioning

confidence: 99%

Retention and Recycling of Deuterium in Liquid Lithium-Tin Slab Studied by First-Principles Molecular Dynamics

Zheng,

Shen,

Chen

et al. 2020

Preprint

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Understanding the retention and recycling of hydrogen isotopes in liquid metal plasma-facing materials such as liquid Li, Sn, and Li-Sn are of fundamental importance in designing magnetically confined fusion reactors. We perform first-principles molecules dynamics simulations of liquid Li-Sn slab with inserted D atoms to provide microscopic insights into the interactions of D with Li-Sn liquid metal. We observe evaporation of D 2 and LiD molecules out of the Li-Sn slabs. With detailed analysis, we unveil a cooperative process of forming D 2 molecules in liquid Li-Sn, where Li atoms act as catalytic centers to trap a D atom before another D comes nearby to form a molecule, and the surplus charges are transferred from D 2 to nearby Sn atoms. Furthermore, we predict a temperature window in which D 2 molecules can escape to vacuum, while LiD molecules cannot.The above findings deepen our understanding of interactions between hydrogen isotopes and Li-Sn liquid metal.

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“…An important task in the study of plasma-wall processes is to research the hydrogen isotopes interaction with lithium capillary-porous systems (CPS) under reactor irradiation [13][14][15]. The first phase of the studies was to develop a technique for lithium CPS sorption experiments at deuterium pressure of 0.1-100 Pa and samples' temperatures of 100-800 °C.…”

Section: Introductionmentioning

confidence: 99%

Methodology of the Experiments to Study Lithium CPS Interaction with Deuterium Under Conditions of Reactor Irradiation

Ponkratov

Nikitenkov

Tazhibayeva

et al. 2019

Eurasian Chem. Tech. J.

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Problems of plasma-facing materials degradation and in-vessel element destructions, tritium accumulation and plasma pollution can be overcome by the use of liquid metals with low atomic number. The best candidate as a material for divertor receiving plates and other in-vessel devices is lithium. One of the problems associated with the use of such lithium systems in the fusion reactors is to determine the parameters of the working gases interaction with plasma facing surfaces under conditions simulating real operation, i.e. under conditions of neutron and gamma radiation. This paper describes a technique of the reactor experiments to study lithium capillary-porous systems (CPS) interaction with deuterium under neutron irradiation. The neutron-physical and thermophysical calculations were the basis for the design development and further manufacture of a unique irradiation ampoule device with a lithium CPS sample. Several experiments were performed to calibrate the deuterium fluxes through experimental cell with lithium CPS; and preliminary results of these experiments were obtained.

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Investigation of hydrogen isotopes interaction with lithium CPS under reactor irradiation

Cited by 7 publications

References 13 publications

Tests of lithium CPS on basis of carboxylic fabric, reinforced with carbon nanotubes under high thermal and radiation loads

Tests of lithium CPS on basis of carboxylic fabric, reinforced with carbon nanotubes under high thermal and radiation loads

Retention and Recycling of Deuterium in Liquid Lithium-Tin Slab Studied by First-Principles Molecular Dynamics

Methodology of the Experiments to Study Lithium CPS Interaction with Deuterium Under Conditions of Reactor Irradiation

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