Grain orientation and temperature dependences of bubbles at tungsten surfaces upon helium plasma exposure
The impact of grain orientation and surface temperature on helium bubble growth at tungsten surfaces exposed to low-pressure helium plasmas was investigated by analyzing the nanoholes formed at the surface. Polycrystalline tungsten samples were exposed to a 2Pa RF plasma at 400W and 79eV positive io...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Nuclear Materials and Energy |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179125000237 |
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| author | Mounir Alfazzaa Federica Pappalardo Andrea Campos Gilles Cartry Marco Minissale Céline Martin |
| author_facet | Mounir Alfazzaa Federica Pappalardo Andrea Campos Gilles Cartry Marco Minissale Céline Martin |
| author_sort | Mounir Alfazzaa |
| collection | DOAJ |
| description | The impact of grain orientation and surface temperature on helium bubble growth at tungsten surfaces exposed to low-pressure helium plasmas was investigated by analyzing the nanoholes formed at the surface. Polycrystalline tungsten samples were exposed to a 2Pa RF plasma at 400W and 79eV positive ion bombardment energy. Through detailed SEM imaging before and after plasma exposure and a developed image analysis protocol, we assessed quantitatively the size and density of helium bubbles that have burst on the surface upon plasma exposure. The results demonstrate a clear temperature dependence, with surface bubble density and size increasing at higher temperatures, and a dependence on grain orientation, with the (111) orientation giving slightly larger and denser surfaces of burst bubbles. |
| format | Article |
| id | doaj-art-91cd730a211f44d1a002420575c46d92 |
| institution | Kabale University |
| issn | 2352-1791 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj-art-91cd730a211f44d1a002420575c46d922025-02-07T04:47:44ZengElsevierNuclear Materials and Energy2352-17912025-03-0142101883Grain orientation and temperature dependences of bubbles at tungsten surfaces upon helium plasma exposureMounir Alfazzaa0Federica Pappalardo1Andrea Campos2Gilles Cartry3Marco Minissale4Céline Martin5Aix Marseille Univ, CNRS, PIIM, Marseille, France; Corresponding authors.Aix Marseille Univ, CNRS, PIIM, Marseille, FranceAix Marseille Univ, CNRS, Centrale Med, FSCM, CP2M, Marseille, FranceAix Marseille Univ, CNRS, PIIM, Marseille, France; Corresponding authors.Aix Marseille Univ, CNRS, PIIM, Marseille, France; Corresponding authors.Aix Marseille Univ, CNRS, PIIM, Marseille, France; Corresponding authors.The impact of grain orientation and surface temperature on helium bubble growth at tungsten surfaces exposed to low-pressure helium plasmas was investigated by analyzing the nanoholes formed at the surface. Polycrystalline tungsten samples were exposed to a 2Pa RF plasma at 400W and 79eV positive ion bombardment energy. Through detailed SEM imaging before and after plasma exposure and a developed image analysis protocol, we assessed quantitatively the size and density of helium bubbles that have burst on the surface upon plasma exposure. The results demonstrate a clear temperature dependence, with surface bubble density and size increasing at higher temperatures, and a dependence on grain orientation, with the (111) orientation giving slightly larger and denser surfaces of burst bubbles.http://www.sciencedirect.com/science/article/pii/S2352179125000237TungstenHeliumBubblesSEMGrain orientationTemperature |
| spellingShingle | Mounir Alfazzaa Federica Pappalardo Andrea Campos Gilles Cartry Marco Minissale Céline Martin Grain orientation and temperature dependences of bubbles at tungsten surfaces upon helium plasma exposure Nuclear Materials and Energy Tungsten Helium Bubbles SEM Grain orientation Temperature |
| title | Grain orientation and temperature dependences of bubbles at tungsten surfaces upon helium plasma exposure |
| title_full | Grain orientation and temperature dependences of bubbles at tungsten surfaces upon helium plasma exposure |
| title_fullStr | Grain orientation and temperature dependences of bubbles at tungsten surfaces upon helium plasma exposure |
| title_full_unstemmed | Grain orientation and temperature dependences of bubbles at tungsten surfaces upon helium plasma exposure |
| title_short | Grain orientation and temperature dependences of bubbles at tungsten surfaces upon helium plasma exposure |
| title_sort | grain orientation and temperature dependences of bubbles at tungsten surfaces upon helium plasma exposure |
| topic | Tungsten Helium Bubbles SEM Grain orientation Temperature |
| url | http://www.sciencedirect.com/science/article/pii/S2352179125000237 |
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