EFFECT OF ULTRAVIOLET RADIATION ON DEUTERIUM DESORPTION FROM CO-DEPOSITED LITHIUM LAYERS
https://doi.org/10.56304/S2079562926020028
EDN: LTFJCV
Abstract
The effect of UV radiation on deuterium retention in co-deposited lithium-deuterium layers has been investigated. The samples were obtained by sputtering a liquid lithium cathode with a deuterium plasma of a magnetron discharge. The deuterium content in the films was analyzed by in-vacuo thermal desorption spectroscopy. After deposition, the deuterium content in the films averaged D/Li = 15 at %. Irradiation with ultraviolet radiation led to the formation of additional low-temperature desorption peaks (T ~ 500 K), as well as to the disappearance of high-temperature peaks (T > 700 K) or to their shift to a lower-temperature region. In the future, the results obtained may form the basis for methods for detecting the places of predominant accumulation of lithium hydride in tokamaks, as well as facilitating the process of removing tritium from the internal elements of thermonuclear installations.
About the Authors
A. K. Khomyakov
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
S. A. Krat
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
A. S. Prishvitsyn
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
E. A. Fefelova
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Yu. M. Gasparyan
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
A. A. Pisarev
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
References
1. Pitts R.A. et al. Plasma-wall interaction impact of the ITER re-baseline // Nucl. Mater. Energy. 2025. V. 42. P. 101854.
2. Roth J. et al. Recent analysis of key plasma wall interactions issues for ITER // J. Nucl. Mater. 2009. V. 390–391. P. 1–9.
3. Krat S. et al. Elastic backscattering as a method for the measurement of the integral lithium content in thin films on fusion-relevant substrates // Nucl. Instrum. Methods Phys. Res., Sect. B. 2019. V. 455. P. 124–133.
4. Вовченко Е.Д. и др. Анализ приповерхностных слоев литиевых покрытий при помощи техники лазерноискровой эмиссионной спектроскопии // Ядерн. физ. инжинир. 2019. Т. 10 (2). С. 101–106.
5. Ефимов Н.Е. и др. Анализ кратеров при лазерном облучении вольфрамовых пленок пикосекундными импульсами для лазерно-ассистированной диагностики поверхности // Ядерн. физ. инжинир. 2025. Т. 16 (2). С. 213–221.
6. Mirnov S. Plasma-wall interactions and plasma behaviour in fusion devices with liquid lithium plasma facing components // J. Nucl. Mater. 2009. V. 390–391 (1). P. 876–885.
7. Гаспарян Ю.М., Крат С.А. Влияние выбора материала облицовки стенок термоядерных установок на накопление изотопов водорода // Вопр. атом. науки техн. Сер.: термояд. синтез. 2024. Т. 47 (1). P. 5–14.
8. Lyublinski I.E., Vertkov A.V., Evtikhin V.A. Application of lithium in systems of fusion reactors. 1. Physical and chemical properties of lithium // Plasma Devices Oper. 2009. V. 17 (1). P. 42–72.
9. LyublinskiI.E., Vertkov A.V., Semenov V.V. Comparative analysis of the possibility of applying low-melting metals with the capillary-porous system in tokamak conditions // Phys. At. Nucl. 2016. V. 79 (7). P. 1163–1169.
10. Mirnov S.V. et al. Lithium Experiment in tokamak T-11M and concept of limiter tokamak-reactor. 21st IAEA Fusion Energy Conf. Chengdu, China. 2006. No. 12. P. 41–43.
11. Vertkov A.V. et al. Progress in development and application of lithium based components for Tokamak // Fusion Eng. Des. 2014. V. 89 (7–8). P. 996–1002.
12. Tabares F.L. et al. Conference Report on the 4rd International Symposium on Lithium Applications // Nucl. Fusion. 2016. V. 56 (12). P. 127002.
13. Ruzic D.N. et al. Flowing liquid lithium plasma-facing components – Physics, technology and system analysis of the LiMIT system // Nucl. Mater. Energy. 2017. V. 12. P. 1324–1329.
14. Morgan T.W. et al. Liquid metals as a divertor plasmafacing material explored using the Pilot-PSI and Magnum-PSI linear devices // Plasma Phys. Controlled Fusion. 2018. V. 60 (1). P. 14025.
15. Kugel H.W. et al. NSTX plasma operation with a Liquid Lithium Divertor // Fusion Eng. Des. 2012. V. 87 (10). P. 1724–1731.
16. Goldston R.J. et al. Recent advances towards a lithium vapor box divertor // Nucl. Mater. Energy. 2017. V. 12. P. 1118–1121.
17. Тулубаев Е.Ю. и др. Методика исследования процесса охлаждения макета модуля литиевого дивертора (МЛД) в условиях высоких энергетических нагрузок // Ядерн. физ. инжинир. 2024. Т. 15 (3). С. 291– 299.
18. Субботин В.И. и др. Литий. 1999. Москва: ИздАТ.
19. Krat S.A. et al. Lithium-deuterium co-deposition // J. Nucl. Mater. 2023. V. 584. P. 154598–154598.
20. Остроушко Ю.И. и др. Литий, его химия и технология. 1960. Москва: Атомиздат.
21. Liu X., Liu J. Effect of air humidity on microstructure and phase composition of lithium deuteride corrosion products // Corros. Sci. 2017. V. 115. P. 129–134.
22. Пилипенко Г.И. Локальные состояния в гидриде и дейтериде лития. Дисс. д.ф.-м.н. 1996. Екатеринбург: УГТУ-УПИ.
23. Krat S. и et al. Effect of helium presence on tungstendeuterium co-deposited films // Nucl. Mater. Energy. 2023. V. 34. P. 101336–101336.
24. Krat S.A. et al. A setup for study of co-deposited films // J. Instrum. 2020. V. 15 (01). P. P01011.
25. Krat S.A. et al. Deuterium release from lithium–deuterium films, deposited in the magnetron discharge // Vacuum. 2014. V. 105. P. 111–114.
26. Golubchikov L.G. et al. Development of a liquid-metal fusion reactor divertor with a capillary-pore system // J. Nucl. Mater. 1996. V. 233–237 (1). P. 667–672.
27. Крат С.А. и др. Сравнение удержания дейтерия в вольфрамовых пленках различной толщины // Ядерн. физ. инжинир. 2024. Т. 15 (3). С. 218–223.
28. Tonks J.P. et al. Corrosion studies of LiH thin films // J. Nucl. Mater. 2017. V. 484. P. 228–235.
29. Короленко П.В. Взаимодействие излучения с веществом. 2011. Москва: Изд-во МГУ.
Review
For citations:
Khomyakov A.K., Krat S.A., Prishvitsyn A.S., Fefelova E.A., Gasparyan Yu.M., Pisarev A.A. EFFECT OF ULTRAVIOLET RADIATION ON DEUTERIUM DESORPTION FROM CO-DEPOSITED LITHIUM LAYERS. Nuclear Physics and Engineering. 2026;17(2):330-336. (In Russ.) https://doi.org/10.56304/S2079562926020028. EDN: LTFJCV
Views:
39
JATS XML
Email this article 