Erosion of nanostructured tungsten by laser ablation, sputtering and arcing
Mass loss of nanostructured tungsten, which was formed by helium plasma irradiation, due to laser ablation, sputtering, and arcing was investigated. Below the helium sputtering energy threshold (<117eV), sputtering by impurity gases such as nitrogen and oxygen was dominant. Sputtering yield becam...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-08-01
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| Series: | Nuclear Materials and Energy |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179116301867 |
| _version_ | 1818319817663315968 |
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| author | Dogyun Hwangbo Shota Kawaguchi Shin Kajita Noriyasu Ohno |
| author_facet | Dogyun Hwangbo Shota Kawaguchi Shin Kajita Noriyasu Ohno |
| author_sort | Dogyun Hwangbo |
| collection | DOAJ |
| description | Mass loss of nanostructured tungsten, which was formed by helium plasma irradiation, due to laser ablation, sputtering, and arcing was investigated. Below the helium sputtering energy threshold (<117eV), sputtering by impurity gases such as nitrogen and oxygen was dominant. Sputtering yield became closer to theoretical value with increasing the incident ion energy, and sputtering by helium ions became the major contribution when the energy was >200eV. Reduction in sputtering on nanostructured surface was observed. Arcing was initiated using laser pulses, and the erosion rate by arcing was measured. The erosion rate increased with arc current, while the erosion per Coulomb was not affected by arc current. Keywords: Nanostructure, Helium plasma, Arcing, Sputtering, Erosion, Tungsten |
| first_indexed | 2024-12-13T10:15:09Z |
| format | Article |
| id | doaj.art-36aef8121e4444aaaaecf77cd19c625d |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-12-13T10:15:09Z |
| publishDate | 2017-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-36aef8121e4444aaaaecf77cd19c625d2022-12-21T23:51:19ZengElsevierNuclear Materials and Energy2352-17912017-08-0112386391Erosion of nanostructured tungsten by laser ablation, sputtering and arcingDogyun Hwangbo0Shota Kawaguchi1Shin Kajita2Noriyasu Ohno3Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan; Corresponding author.Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, JapanInstitute of Materials and Systems for Sustainability, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, JapanGraduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, JapanMass loss of nanostructured tungsten, which was formed by helium plasma irradiation, due to laser ablation, sputtering, and arcing was investigated. Below the helium sputtering energy threshold (<117eV), sputtering by impurity gases such as nitrogen and oxygen was dominant. Sputtering yield became closer to theoretical value with increasing the incident ion energy, and sputtering by helium ions became the major contribution when the energy was >200eV. Reduction in sputtering on nanostructured surface was observed. Arcing was initiated using laser pulses, and the erosion rate by arcing was measured. The erosion rate increased with arc current, while the erosion per Coulomb was not affected by arc current. Keywords: Nanostructure, Helium plasma, Arcing, Sputtering, Erosion, Tungstenhttp://www.sciencedirect.com/science/article/pii/S2352179116301867 |
| spellingShingle | Dogyun Hwangbo Shota Kawaguchi Shin Kajita Noriyasu Ohno Erosion of nanostructured tungsten by laser ablation, sputtering and arcing Nuclear Materials and Energy |
| title | Erosion of nanostructured tungsten by laser ablation, sputtering and arcing |
| title_full | Erosion of nanostructured tungsten by laser ablation, sputtering and arcing |
| title_fullStr | Erosion of nanostructured tungsten by laser ablation, sputtering and arcing |
| title_full_unstemmed | Erosion of nanostructured tungsten by laser ablation, sputtering and arcing |
| title_short | Erosion of nanostructured tungsten by laser ablation, sputtering and arcing |
| title_sort | erosion of nanostructured tungsten by laser ablation sputtering and arcing |
| url | http://www.sciencedirect.com/science/article/pii/S2352179116301867 |
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