Small ion-temperature-gradient scale length and reduced heat diffusivity at large hydrogen isotope mass in conventional H-mode plasmas
The dependence of the ion-temperature-gradient scale length on the hydrogen isotope mass was examined in conventional H-mode plasmas in JT-60U tokamak. While identical profiles for density and temperature were obtained for hydrogen and deuterium plasmas, the ion conductive heat flux necessary for hy...
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| Veröffentlicht in: | Physical review letters 2012-09, Vol.109 (12), p.125001-125001, Article 125001 |
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| container_title | Physical review letters |
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| creator | Urano, H Takizuka, T Kikuchi, M Nakano, T Hayashi, N Oyama, N Kamada, Y |
| description | The dependence of the ion-temperature-gradient scale length on the hydrogen isotope mass was examined in conventional H-mode plasmas in JT-60U tokamak. While identical profiles for density and temperature were obtained for hydrogen and deuterium plasmas, the ion conductive heat flux necessary for hydrogen to sustain the same ion temperature profile was two times that required for deuterium, resulting in a clearly higher ion heat diffusivity for hydrogen at the same ion-temperature-gradient scale length. On the other hand, the ion-temperature-gradient scale length for deuterium is less than that for hydrogen at a given ion heat diffusivity. |
| doi_str_mv | 10.1103/PhysRevLett.109.125001 |
| format | Article |
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While identical profiles for density and temperature were obtained for hydrogen and deuterium plasmas, the ion conductive heat flux necessary for hydrogen to sustain the same ion temperature profile was two times that required for deuterium, resulting in a clearly higher ion heat diffusivity for hydrogen at the same ion-temperature-gradient scale length. On the other hand, the ion-temperature-gradient scale length for deuterium is less than that for hydrogen at a given ion heat diffusivity.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/PhysRevLett.109.125001</identifier><identifier>PMID: 23005950</identifier><language>eng</language><publisher>United States</publisher><ispartof>Physical review letters, 2012-09, Vol.109 (12), p.125001-125001, Article 125001</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c364t-28c9c7682ebabf279d2cd20c3fd104cf0a90138c81f1122ebed9b53c6f4a01023</citedby><cites>FETCH-LOGICAL-c364t-28c9c7682ebabf279d2cd20c3fd104cf0a90138c81f1122ebed9b53c6f4a01023</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,2874,2875,27922,27923</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23005950$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Urano, H</creatorcontrib><creatorcontrib>Takizuka, T</creatorcontrib><creatorcontrib>Kikuchi, M</creatorcontrib><creatorcontrib>Nakano, T</creatorcontrib><creatorcontrib>Hayashi, N</creatorcontrib><creatorcontrib>Oyama, N</creatorcontrib><creatorcontrib>Kamada, Y</creatorcontrib><title>Small ion-temperature-gradient scale length and reduced heat diffusivity at large hydrogen isotope mass in conventional H-mode plasmas</title><title>Physical review letters</title><addtitle>Phys Rev Lett</addtitle><description>The dependence of the ion-temperature-gradient scale length on the hydrogen isotope mass was examined in conventional H-mode plasmas in JT-60U tokamak. While identical profiles for density and temperature were obtained for hydrogen and deuterium plasmas, the ion conductive heat flux necessary for hydrogen to sustain the same ion temperature profile was two times that required for deuterium, resulting in a clearly higher ion heat diffusivity for hydrogen at the same ion-temperature-gradient scale length. 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While identical profiles for density and temperature were obtained for hydrogen and deuterium plasmas, the ion conductive heat flux necessary for hydrogen to sustain the same ion temperature profile was two times that required for deuterium, resulting in a clearly higher ion heat diffusivity for hydrogen at the same ion-temperature-gradient scale length. On the other hand, the ion-temperature-gradient scale length for deuterium is less than that for hydrogen at a given ion heat diffusivity.</abstract><cop>United States</cop><pmid>23005950</pmid><doi>10.1103/PhysRevLett.109.125001</doi><tpages>1</tpages></addata></record> |
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| source | American Physical Society Journals |
| title | Small ion-temperature-gradient scale length and reduced heat diffusivity at large hydrogen isotope mass in conventional H-mode plasmas |
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