Simulation of Hydrogen Isotopes Accumulation Processes in Materials in the Presence of Chemical Traps

The accumulation of hydrogen inside solids occurs in traps of a different nature. In addition to presence of hydrogen in interstitial sites, there are dislocation mechanisms of hydrogen storage, micropores and microcracks, sorption on the free surface of microdefects, chemical traps with the formation of hydrides and other compounds, both with matrix material and with impurities or components of alloys..

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

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. Liquid lithium advantages as a plasma facing material have been confirmed by a large number of the experiments at the plasma-physical facilities being operated worldwide

Estimation and Mode Selection of Deuterium Flux Supply into Ampoule Device through Diffusion Filter in Experiments with Pb-15.7Li Eutectic at the IVG1.M Reactor

In first generation of fusion energy reactors hydrogen isotopes - deuterium and tritium will be used as a fuel. A reserve of tritium in nature does not exist, therefore, for tritium generation the design of fusion reactors involves a special device called breeder blanket, containing lithium

Methodology of Corrosion Testing of Nuclear and Fusion Reactors’ Materals Using TGA/DSC and MS Complex Techniques

Nowadays, nuclear power is the best that humanity has for the production and supply for cheap electric and thermal energy. The development of nuclear power takes place in a rigid competitive struggle, both with the traditional technologies of electricity production, and with alternative (renewable) sources

Study of Luminescene in Noble Gases and Their Binary Mixtures Excited by the Products of 6Li(n,α)T Nuclear Reaction

Direct conversion of nuclear particles’ energy into optical radiation opens up new opportunities in obtaining a large amount of light energy, including its most perfect form - coherent light [1-2]. Moreover, optical radiation study of a nuclear-excited plasma produced by products of nuclear reactions is of interest for: development of an alternative method of energy output from a nuclear reactor [3]; creation of devices to control and regulation of nuclear reactors’ parameters, creation one of the diagnostics of high-temperature plasma in fusion reactors [4]. Therefore, spectral studies of nuclear-excited plasma are relevant and are of interest for solving problems, associated with gas media selection with high efficiency of nuclear reaction energy conversion into optical radiation

Studies of two-phase lithium ceramics Li4_{4}SiO4_{4}-Li2_{2}TiO3_{3} under conditions of neutron irradiation

This work presents the preliminary experimental data on the study of gas release from two-phase lithium ceramics Li$_{4}$SiO$_{4}$-Li$_{2}$TiO$_{3}$ under neutron irradiation conditions. Experiments were carried out at the WWR-K research reactor (Almaty, Kazakhstan) for ∼4.3 days. The total neutron fluence during the irradiation was ∼1.8·10$^{19}$n/cm$^{2}$. In the course of irradiation, two experiments on ceramics heating during irradiation and two experiments with hydrogen isotopes (H$_{2}$ and D$_{2}$) supply into the experimental chamber with the sample were performed at a temperature of 680 °C and reactor power of 6 MW. During the entire irradiation, the gas composition in the continuously evacuated ampoule device with samples was recorded. The obtained dependences of the release of tritium-containing molecules and helium during the experiment were qualitatively analyzed