Effect of periodic deuterium ion irradiation on deuterium retention and blistering in Tungsten
The effect of periodic irradiation on Deuterium (D) retention and blistering in Tungsten (W) was investigated. W samples were exposed to D plasma at a fixed fluence while varying the irradiation cycle number (1-shot, 2-shots and 3-shots). Exposure energy and flux were ∼50eV and ∼1 ×1022 D m−2 s−1, r...
| 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/S2352179116301077 |
| _version_ | 1828306901279965184 |
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| author | M. Oya H.T. Lee A. Hara K. Ibano M. Oyaidzu T. Hayashi Y. Ueda |
| author_facet | M. Oya H.T. Lee A. Hara K. Ibano M. Oyaidzu T. Hayashi Y. Ueda |
| author_sort | M. Oya |
| collection | DOAJ |
| description | The effect of periodic irradiation on Deuterium (D) retention and blistering in Tungsten (W) was investigated. W samples were exposed to D plasma at a fixed fluence while varying the irradiation cycle number (1-shot, 2-shots and 3-shots). Exposure energy and flux were ∼50eV and ∼1 ×1022 D m−2 s−1, respectively. Sample temperatures were 537K and 643K. At 573K, D retention and blister density decreased with increasing number of irradiation cycle. In contrast at 643K, D retention showed no dependence on number of irradiation cycle. Therefore, sample temperature during irradiation is an important parameter in comparing the results of continuous and periodic irradiation, especially in studies involving extremely-high-flux (>1024 D m−2 s−1) irradiation and fluence dependency of D retention. Keywords: Tungsten, Hydrogen isotope retention, Blistering, Divertor, TDS |
| first_indexed | 2024-04-13T14:50:19Z |
| format | Article |
| id | doaj.art-0dc2c22db34449adbf21752d072b73eb |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-04-13T14:50:19Z |
| publishDate | 2017-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-0dc2c22db34449adbf21752d072b73eb2022-12-22T02:42:36ZengElsevierNuclear Materials and Energy2352-17912017-08-0112674677Effect of periodic deuterium ion irradiation on deuterium retention and blistering in TungstenM. Oya0H.T. Lee1A. Hara2K. Ibano3M. Oyaidzu4T. Hayashi5Y. Ueda6Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, Japan; Corresponding author.Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, JapanGraduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, JapanGraduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, JapanFusion Research and Development Directorate, National Institutes for Quantum and Radiological Science and Technology, 2-166, Omotedate, Obuchi Rokkasho-mura, Aomori 039-3212, JapanFusion Research and Development Directorate, National Institutes for Quantum and Radiological Science and Technology, 2-166, Omotedate, Obuchi Rokkasho-mura, Aomori 039-3212, JapanGraduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, JapanThe effect of periodic irradiation on Deuterium (D) retention and blistering in Tungsten (W) was investigated. W samples were exposed to D plasma at a fixed fluence while varying the irradiation cycle number (1-shot, 2-shots and 3-shots). Exposure energy and flux were ∼50eV and ∼1 ×1022 D m−2 s−1, respectively. Sample temperatures were 537K and 643K. At 573K, D retention and blister density decreased with increasing number of irradiation cycle. In contrast at 643K, D retention showed no dependence on number of irradiation cycle. Therefore, sample temperature during irradiation is an important parameter in comparing the results of continuous and periodic irradiation, especially in studies involving extremely-high-flux (>1024 D m−2 s−1) irradiation and fluence dependency of D retention. Keywords: Tungsten, Hydrogen isotope retention, Blistering, Divertor, TDShttp://www.sciencedirect.com/science/article/pii/S2352179116301077 |
| spellingShingle | M. Oya H.T. Lee A. Hara K. Ibano M. Oyaidzu T. Hayashi Y. Ueda Effect of periodic deuterium ion irradiation on deuterium retention and blistering in Tungsten Nuclear Materials and Energy |
| title | Effect of periodic deuterium ion irradiation on deuterium retention and blistering in Tungsten |
| title_full | Effect of periodic deuterium ion irradiation on deuterium retention and blistering in Tungsten |
| title_fullStr | Effect of periodic deuterium ion irradiation on deuterium retention and blistering in Tungsten |
| title_full_unstemmed | Effect of periodic deuterium ion irradiation on deuterium retention and blistering in Tungsten |
| title_short | Effect of periodic deuterium ion irradiation on deuterium retention and blistering in Tungsten |
| title_sort | effect of periodic deuterium ion irradiation on deuterium retention and blistering in tungsten |
| url | http://www.sciencedirect.com/science/article/pii/S2352179116301077 |
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