| Title: | Influence of near-surface helium on the deuterium retention and uptake in tungsten |
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| Authors: | ID Markelj, Sabina, Institut "Jožef Stefan" (Author)
ID Schwarz-Selinger, Thomas (Author)
ID Šestan, Andreja, Institut "Jožef Stefan" (Author)
ID Zavašnik, Janez, Institut "Jožef Stefan" (Author)
ID Kelemen, Mitja, Institut "Jožef Stefan" (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S2352179125001231
 PDF - Presentation file, download (6,77 MB)
MD5: 27C2C650DA2C7057E31719565C31BA09
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | The effect of near-surface helium (He) on deuterium (D) retention and uptake into the bulk of tungsten (W) was investigated. To quantify the He influence on D uptake, He was implanted close to the surface with 3 keV energy at different fluences and different temperatures. 20 MeV W irradiation was performed at room temperature after He implantation to create defects within the first 2.3 µm. Samples were then exposed to a low flux, low energy (300 eV/D) D ion beam at 450 K. The defects created by W ions trap penetrating D and make it hence possible to quantify D transport into depth below the He layer using 3He nuclear reaction analysis. Elastic recoil detection analysis enabled us to measure the D and He concentration depth profiles near the surface. Results show that D gets preferentially retained where He is implanted with D concentrations up to 10 at.%. At the same time D uptake beyond the He zone is reduced by a factor of 15 compared to a He-free W sample. |
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| Keywords: | deuterium retention, displacement damage |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 10.07.2025 |
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| Article acceptance date: | 03.09.2025 |
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| Publication date: | 05.09.2025 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 1-9 |
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| Numbering: | Vol. 45, [article no.] 101981 |
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| Source: | Nizozemska |
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| PID: | 20.500.12556/DiRROS-24678  |
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| UDC: | 620.1/.2 |
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| ISSN on article: | 2352-1791 |
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| DOI: | 10.1016/j.nme.2025.101981 |
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| COBISS.SI-ID: | 256538627 |
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| Copyright: | © 2025 The Author(s). |
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| Note: | Nasl. z nasl. zaslona;
Soavtorji iz Slovenije: Andreja Šestan, Janez Zavašnik, Mitja Kelemen;
Opis vira z dne 10. 11. 2025;
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| Publication date in DiRROS: | 11.12.2025 |
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| Views: | 81 |
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| Downloads: | 43 |
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