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

0574010 - ÚJF 2024 RIV NL eng J - Journal Article
Mateus, R. - Catarino, N. - Dias, M. - Alves, L. C. - Romanenko, Oleksandr V. - Siketić, Z. - Radovic, I. B. - Hakola, A. - Grigore, E. - Alves, E.
Deuterium and helium retention in W and W-Ta coatings irradiated with energetic ion beams.
Nuclear Instruments & Methods in Physics Research Section B. Roč. 538, MAY (2023), s. 41-46. ISSN 0168-583X. E-ISSN 1872-9584
R&D Projects: GA MŠMT EF18_053/0017163
Institutional support: RVO:61389005
Keywords : W-Ta coatings * Helium * Deuterium * Retention
OECD category: Nuclear physics
Impact factor: 1.3, year: 2022
Method of publishing: Open access
https://doi.org/10.1016/j.nimb.2023.02.028

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 & mu,-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 x 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.
Permanent Link: https://hdl.handle.net/11104/0344460