ESTIMATION OF HELIUM AND TRITIUM RELEASE FROM THE Li15.7Pb LEAD-LITHIUM EUTECTIC IN THE SOLID PHASE STATE UNDER IRRADIATION AT THE IVG.1M REACTOR

Yevgeniy Tulubayev, Yuriy Ponkratov, Yuriy Gordienko, V. S. Bochkov, Olga S. Bukina, Kuanysh Samarkhanov

2020

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DOI 10.52676/1729-7885-2020-1-46-52

Data confidence 70 medium

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Abstract

The studies described in this paper are devoted to the study of helium and tritium release formation in the solid phase state of new Li15.7Pb lithium-lead eutectic under irradiation. The paper describes the main properties of the new material and its microstructure. The comparison of microstructures of eutectic Li15.7Pb and Pb17Li is given. Helium and tritium free path length in the near-surface layer of the lead lithium eutectic sample were calculated. The rate of helium and tritium formation in this material during its irradiation at the IVG.1M reactor has been determined. Estimation of helium and tritium release formation from the near-surface layer of the Li15.7Pb lithium-lead eutectic has been done and a comparison with experimental data obtained in in-pile test has been presented.