The effect of Ar+ impurity on W nano-fuzz growth over polycrystalline W targets
The use of extrinsic impurities, such as neon (Ne), nitrogen (N2) and argon (Ar) can generate the radiative cooling of the divertor plasma during deuterium-tritium (D-T) operations in a fusion reactor. In this study, we report on the effect of 50 eV Ar+ ions on W nano-fuzz growth over tungsten (W) t...
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| Veröffentlicht in: | Journal of nuclear materials 2020-08, Vol.536, p.152229, Article 152229 |
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| container_title | Journal of nuclear materials |
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| creator | Ni, Weiyuan Zhang, Yang Niu, Chunjie Cui, Yunqiu Liu, Weifeng Li, Xiaoping Fan, Hongyu Song, Guicai Liu, Dongping |
| description | The use of extrinsic impurities, such as neon (Ne), nitrogen (N2) and argon (Ar) can generate the radiative cooling of the divertor plasma during deuterium-tritium (D-T) operations in a fusion reactor. In this study, we report on the effect of 50 eV Ar+ ions on W nano-fuzz growth over tungsten (W) targets under large-flux (2.6 × 1022/m2⋅s) helium (He) and Ar ion irradiations. Our measurements show that the serious surface erosion of W divertor is formed due to Ar+ sputtering, and Ar+ sputtering process can significantly suppress the W nano-fuzz growth and decrease the diameter of W nano-fuzz. During Ar+ sputtering microns-sized clusters have been formed over W targets, and our analysis indicates that the surface migration and redeposition of W atoms resulting from sputtering can lead to a significant change in the surface microstructure of W targets. |
| doi_str_mv | 10.1016/j.jnucmat.2020.152229 |
| format | Article |
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In this study, we report on the effect of 50 eV Ar+ ions on W nano-fuzz growth over tungsten (W) targets under large-flux (2.6 × 1022/m2⋅s) helium (He) and Ar ion irradiations. Our measurements show that the serious surface erosion of W divertor is formed due to Ar+ sputtering, and Ar+ sputtering process can significantly suppress the W nano-fuzz growth and decrease the diameter of W nano-fuzz. During Ar+ sputtering microns-sized clusters have been formed over W targets, and our analysis indicates that the surface migration and redeposition of W atoms resulting from sputtering can lead to a significant change in the surface microstructure of W targets.</description><identifier>ISSN: 0022-3115</identifier><identifier>EISSN: 1873-4820</identifier><identifier>DOI: 10.1016/j.jnucmat.2020.152229</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Argon ; Argon ions ; Deuterium ; Diameters ; Helium ; Impurities ; Neon ; Sputtering ; Tritium ; Tungsten</subject><ispartof>Journal of nuclear materials, 2020-08, Vol.536, p.152229, Article 152229</ispartof><rights>2020 Elsevier B.V.</rights><rights>Copyright Elsevier BV Aug 1, 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c318t-6190e2ba7fad46d58e638253b9ba938f5b8bcd8e85f56d0f0d56881c6a569fe3</citedby><cites>FETCH-LOGICAL-c318t-6190e2ba7fad46d58e638253b9ba938f5b8bcd8e85f56d0f0d56881c6a569fe3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jnucmat.2020.152229$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3548,27923,27924,45994</link.rule.ids></links><search><creatorcontrib>Ni, Weiyuan</creatorcontrib><creatorcontrib>Zhang, Yang</creatorcontrib><creatorcontrib>Niu, Chunjie</creatorcontrib><creatorcontrib>Cui, Yunqiu</creatorcontrib><creatorcontrib>Liu, Weifeng</creatorcontrib><creatorcontrib>Li, Xiaoping</creatorcontrib><creatorcontrib>Fan, Hongyu</creatorcontrib><creatorcontrib>Song, Guicai</creatorcontrib><creatorcontrib>Liu, Dongping</creatorcontrib><title>The effect of Ar+ impurity on W nano-fuzz growth over polycrystalline W targets</title><title>Journal of nuclear materials</title><description>The use of extrinsic impurities, such as neon (Ne), nitrogen (N2) and argon (Ar) can generate the radiative cooling of the divertor plasma during deuterium-tritium (D-T) operations in a fusion reactor. 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During Ar+ sputtering microns-sized clusters have been formed over W targets, and our analysis indicates that the surface migration and redeposition of W atoms resulting from sputtering can lead to a significant change in the surface microstructure of W targets.</description><subject>Argon</subject><subject>Argon ions</subject><subject>Deuterium</subject><subject>Diameters</subject><subject>Helium</subject><subject>Impurities</subject><subject>Neon</subject><subject>Sputtering</subject><subject>Tritium</subject><subject>Tungsten</subject><issn>0022-3115</issn><issn>1873-4820</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqFkMtqwzAQRUVpoWnaTygIuixOJdly5FUJoS8IZBPoUsjyKLFxLFeSU5Kvr4Kz72pgOPcOcxB6pGRGCc1fmlnTDXqvwowRFnecMVZcoQkV8zTJBCPXaEIIY0lKKb9Fd943hBBeED5B680OMBgDOmBr8MI943rfD64OR2w7_I071dnEDKcT3jr7G3bYHsDh3rZH7Y4-qLatO4hcUG4Lwd-jG6NaDw-XOUWb97fN8jNZrT--lotVolMqQpLTggAr1dyoKssrLiBPBeNpWZSqSIXhpSh1JUBww_OKGFLxXAiqc8XzwkA6RU9jbe_szwA-yMYOrosXJcuyLGqZsyJSfKS0s947MLJ39V65o6REntXJRl7UybM6OaqLudcxB_GDQw1Oel1Dp6GqXRQlK1v_0_AHYHN59Q</recordid><startdate>20200801</startdate><enddate>20200801</enddate><creator>Ni, Weiyuan</creator><creator>Zhang, Yang</creator><creator>Niu, Chunjie</creator><creator>Cui, Yunqiu</creator><creator>Liu, Weifeng</creator><creator>Li, Xiaoping</creator><creator>Fan, Hongyu</creator><creator>Song, Guicai</creator><creator>Liu, Dongping</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>7ST</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope><scope>SOI</scope></search><sort><creationdate>20200801</creationdate><title>The effect of Ar+ impurity on W nano-fuzz growth over polycrystalline W targets</title><author>Ni, Weiyuan ; Zhang, Yang ; Niu, Chunjie ; Cui, Yunqiu ; Liu, Weifeng ; Li, Xiaoping ; Fan, Hongyu ; Song, Guicai ; Liu, Dongping</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c318t-6190e2ba7fad46d58e638253b9ba938f5b8bcd8e85f56d0f0d56881c6a569fe3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Argon</topic><topic>Argon ions</topic><topic>Deuterium</topic><topic>Diameters</topic><topic>Helium</topic><topic>Impurities</topic><topic>Neon</topic><topic>Sputtering</topic><topic>Tritium</topic><topic>Tungsten</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ni, Weiyuan</creatorcontrib><creatorcontrib>Zhang, Yang</creatorcontrib><creatorcontrib>Niu, Chunjie</creatorcontrib><creatorcontrib>Cui, Yunqiu</creatorcontrib><creatorcontrib>Liu, Weifeng</creatorcontrib><creatorcontrib>Li, Xiaoping</creatorcontrib><creatorcontrib>Fan, Hongyu</creatorcontrib><creatorcontrib>Song, Guicai</creatorcontrib><creatorcontrib>Liu, Dongping</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Environment Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>Journal of nuclear materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ni, Weiyuan</au><au>Zhang, Yang</au><au>Niu, Chunjie</au><au>Cui, Yunqiu</au><au>Liu, Weifeng</au><au>Li, Xiaoping</au><au>Fan, Hongyu</au><au>Song, Guicai</au><au>Liu, Dongping</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The effect of Ar+ impurity on W nano-fuzz growth over polycrystalline W targets</atitle><jtitle>Journal of nuclear materials</jtitle><date>2020-08-01</date><risdate>2020</risdate><volume>536</volume><spage>152229</spage><pages>152229-</pages><artnum>152229</artnum><issn>0022-3115</issn><eissn>1873-4820</eissn><abstract>The use of extrinsic impurities, such as neon (Ne), nitrogen (N2) and argon (Ar) can generate the radiative cooling of the divertor plasma during deuterium-tritium (D-T) operations in a fusion reactor. 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| subjects | Argon Argon ions Deuterium Diameters Helium Impurities Neon Sputtering Tritium Tungsten |
| title | The effect of Ar+ impurity on W nano-fuzz growth over polycrystalline W targets |
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