Deuterium and helium retention in W and W-Ta coatings irradiated with energetic ion beams

Mateus, R.; Catarino, N.; Dias, M.; Alves, L.C.; Romanenko, O.; Siketić, Zdravko; Bogdanović Radović, Ivančica; Hakola, A.; Grigore, E.; Alves, E. (2023) Deuterium and helium retention in W and W-Ta coatings irradiated with energetic ion beams. Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 538 . pp. 41-46. ISSN 0168-583X

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Abstract

Different studies reveal the behaviour of Ta alloying to decrease deuterium retention in tungsten bulk materials aiming to be used for nuclear fusion applications. In this work, W and W-5 %Ta coatings were produced via magnetron sputtering techniques. The elemental composition of the samples and the spread of Ta in the W lattice was confirmed by GDOES, PIXE and by μ-PIXE, respectively. Sets of W and W-Ta coatings were simultaneously irradiated with a single 2H+2 or with sequential 4He+/2H+2 ion beam implantations using incident energies of 30 keV and ion fluences of 5 × 1017 ion/cm2. The irradiated samples were analysed by NRA/RBS and by ToF-ERDA to quantify the retained deuterium and helium amounts. The results reveal significantly lower contents of both isotopes in W-Ta.

Item Type:	Article
Uncontrolled Keywords:	W-Ta coatings ; Helium ; Deuterium ; Retention
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Division of Experimental Physics
Projects:	Project title Project leader Project code Project type Istraživanje i razvoj s ionskim zrakama – unaprjeđenje tehnologije u Europi Bogdanović Radović, Ivančica 824096 EK
Depositing User:	Sofija Konjević
Date Deposited:	19 Jun 2023 13:44
URI:	http://fulir.irb.hr/id/eprint/8037
DOI:	10.1016/j.nimb.2023.02.028

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