Publication: Accumulation of Deuterium and Helium in Co-Deposited W Layers Formed in He-Seeded Deuterium Plasma
Дата
2022
Авторы
Krat, S. A.
Fefelova, E. A.
Prishvitcyn, A. S.
Khomyakov, A. K.
Gasparyan, Y. M.
Pisarev, A. A.
Journal Title
Journal ISSN
Volume Title
Издатель
Аннотация
© 2022, Allerton Press, Inc.Abstract: The effect He in plasma has on the co-deposition of D–W films is investigated for the room–800 K range of substrate temperatures and two He/D2 ratios of 5 and 20%. He can both raise and lower the content of D in a film, and a mechanism is proposed for this effect. The ratio of He/D in the film is higher than in gas, due to the stronger diffusivity and bonding energy of He. A similarity is observed between the dependences of D and He content on temperature, and it is suggested that the low temperature release of D and He during TDS could be due to annealing-induced relaxation of stresses in the film structure. It is expected that the desorption of He above 1300 K could lead to underestimates of the He content.
Описание
Ключевые слова
Цитирование
Accumulation of Deuterium and Helium in Co-Deposited W Layers Formed in He-Seeded Deuterium Plasma / Krat, S.A. [et al.] // Bulletin of the Russian Academy of Sciences: Physics. - 2022. - 86. - № 5. - P. 521-525. - 10.3103/S1062873822050148