This paper presents the results of the experiments on hydrogen isotopes interaction with lithium capillary-porous systems (CPS) under reactor irradiation, when sample's temperatures were from 180 to 550 °C. A special ampoule device with a tubular sample of lithium CPS was developed for experiments. The IVG.1 M reactor (Kurchatov) was used as a source of radiation. The experiments were carried out by the method of dynamic sorption: a constant flow of deuterium was swept through the tube sample with constant degassing and fixation of gas composition in the experimental ampoule device. The paper presents initial data on temperature dependencies of tritium release from lithium CPS under reactor irradiation. The initial analysis showed some features of tritium release: insignificant tritium release in solid lithium (samples temperature below 180 °C), decrease of tritium release under temperature of cell's center ˜ 250℃, stop of tritium release under temperature of cell's center ˜ 300℃; then tritium release increased with increase of temperature. The conclusion was made that tritium capture by lithium has a significant influence on the processes of tritium release from lithium CPS under reactor irradiation. The work was performed within the framework of the ISTC #K-2204 project.

Reactor studies of hydrogen isotopes interaction with lithium CPS using dynamic sorption technique

Mazzitelli G.
2019

Abstract

This paper presents the results of the experiments on hydrogen isotopes interaction with lithium capillary-porous systems (CPS) under reactor irradiation, when sample's temperatures were from 180 to 550 °C. A special ampoule device with a tubular sample of lithium CPS was developed for experiments. The IVG.1 M reactor (Kurchatov) was used as a source of radiation. The experiments were carried out by the method of dynamic sorption: a constant flow of deuterium was swept through the tube sample with constant degassing and fixation of gas composition in the experimental ampoule device. The paper presents initial data on temperature dependencies of tritium release from lithium CPS under reactor irradiation. The initial analysis showed some features of tritium release: insignificant tritium release in solid lithium (samples temperature below 180 °C), decrease of tritium release under temperature of cell's center ˜ 250℃, stop of tritium release under temperature of cell's center ˜ 300℃; then tritium release increased with increase of temperature. The conclusion was made that tritium capture by lithium has a significant influence on the processes of tritium release from lithium CPS under reactor irradiation. The work was performed within the framework of the ISTC #K-2204 project.
Hydrogen isotopes; Lithium CPS; Neutron irradiation
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12079/52013
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