Evaluation of charge-exchange neutral incident parameters onto plasma-facing materials in LHD with material probe method
Charge-exchange (CX) neutrals bombarding plasma-facing materials (PFMs) have large impacts not only on surface modifications of PFMs but also on plasma density control. To examine the effects of CX-neutrals on modifications of PFMs under specific plasma conditions, the controlled material probe expe...
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| Veröffentlicht in: | Journal of nuclear materials 2011-10, Vol.417 (1-3), p.673-677 |
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| container_end_page | 677 |
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| container_issue | 1-3 |
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| container_title | Journal of nuclear materials |
| container_volume | 417 |
| creator | Miyamoto, M. Tokitani, M. Ashikawa, N. Kobayashi, M. Shoji, M. Masuzaki, S. Yoshida, N. Reiter, D. Ono, K. |
| description | Charge-exchange (CX) neutrals bombarding plasma-facing materials (PFMs) have large impacts not only on surface modifications of PFMs but also on plasma density control. To examine the effects of CX-neutrals on modifications of PFMs under specific plasma conditions, the controlled material probe experiments were performed in LHD. CX-neutrals incident parameters were evaluated quantitatively for each plasma condition from the viewpoint of microscopic damages. Microstructures of the samples exposed to LHD plasmas showed a significant dependence on the plasma density, working gas and sample temperature. These results are consistent with laboratory irradiation experiments and a modeling analysis. In addition, the suitability of this method as a CX-neutral monitor is discussed. |
| doi_str_mv | 10.1016/j.jnucmat.2010.12.186 |
| format | Article |
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To examine the effects of CX-neutrals on modifications of PFMs under specific plasma conditions, the controlled material probe experiments were performed in LHD. CX-neutrals incident parameters were evaluated quantitatively for each plasma condition from the viewpoint of microscopic damages. Microstructures of the samples exposed to LHD plasmas showed a significant dependence on the plasma density, working gas and sample temperature. These results are consistent with laboratory irradiation experiments and a modeling analysis. In addition, the suitability of this method as a CX-neutral monitor is discussed.</description><subject>Applied sciences</subject><subject>Control surfaces</subject><subject>Controled nuclear fusion plants</subject><subject>Damage</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Exact sciences and technology</subject><subject>Exposure</subject><subject>Fission nuclear power plants</subject><subject>Fuels</subject><subject>Installations for energy generation and conversion: thermal and electrical energy</subject><subject>Irradiation</subject><subject>Mathematical models</subject><subject>Microstructure</subject><subject>Monitors</subject><subject>Nuclear fuels</subject><subject>Plasma density</subject><issn>0022-3115</issn><issn>1873-4820</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqFkEGL2zAQhUVpoWm6P6GgS2EvTiXZju3TsqTZphDopXsWY3mcKNhSVpK32X-_ExJy7Umj4XvzZh5j36RYSCGXPw6Lg5vMCGmhxLmnFrJefmAzWVd5VtRKfGQzIZTKcinLz-xLjAchRNmIcsZO61cYJkjWO-57bvYQdpjhiQq3Q-5wSgEGbp2xHbrEjxBgxIQhcu-S58cB4ghZD8a6HacdMFgYIgn4dvOT_7Npf-vyY_AtcpLvffeVfeoJxLvrO2fPT-u_q022_fPr9-pxm5m8Uilrl1K2WPdFBVCIWhY5gGqqsgFTIWBnemwM_cqmKepemLyrCsy7nMi2a6mcs_vLXDJ_mTAmPdpocBjAoZ-ipgRFTbTMCS0vqAk-xoC9PgY7Qngj6Mwt9UFfk9bnpLVUmpIm3ferBUQDQx-A0oo3sSqqUhZNTdzDhUO699Vi0NFYdAY7G9Ak3Xn7H6d3BGuZkg</recordid><startdate>20111001</startdate><enddate>20111001</enddate><creator>Miyamoto, M.</creator><creator>Tokitani, M.</creator><creator>Ashikawa, N.</creator><creator>Kobayashi, M.</creator><creator>Shoji, M.</creator><creator>Masuzaki, S.</creator><creator>Yoshida, N.</creator><creator>Reiter, D.</creator><creator>Ono, K.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20111001</creationdate><title>Evaluation of charge-exchange neutral incident parameters onto plasma-facing materials in LHD with material probe method</title><author>Miyamoto, M. ; Tokitani, M. ; Ashikawa, N. ; Kobayashi, M. ; Shoji, M. ; Masuzaki, S. ; Yoshida, N. ; Reiter, D. ; Ono, K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c372t-b611be8f47aa408143aa29759ac7eaedcfe9c59a59948f0c3d74e3d3814bdb4e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Applied sciences</topic><topic>Control surfaces</topic><topic>Controled nuclear fusion plants</topic><topic>Damage</topic><topic>Energy</topic><topic>Energy. 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| subjects | Applied sciences Control surfaces Controled nuclear fusion plants Damage Energy Energy. Thermal use of fuels Exact sciences and technology Exposure Fission nuclear power plants Fuels Installations for energy generation and conversion: thermal and electrical energy Irradiation Mathematical models Microstructure Monitors Nuclear fuels Plasma density |
| title | Evaluation of charge-exchange neutral incident parameters onto plasma-facing materials in LHD with material probe method |
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