Observation of a spontaneous particle-transport barrier in the HL-2A tokamak
Using the profile analysis, the density perturbation transport analysis, and the Doppler reflectometry measurement, for the first time a spontaneous and steady-state particle-transport barrier has been evidenced in the Ohmic plasmas in the HL-2A tokamak with no externally applied momentum or particl...
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| Veröffentlicht in: | Physical review letters 2010-05, Vol.104 (21), p.215001-215001, Article 215001 |
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| creator | Xiao, W W Zou, X L Ding, X T Yao, L H Feng, B B Song, X M Song, S D Zhou, Y Liu, Z T Yuan, B S Sun, H J Ji, X Q Gao, Y D Li, Y G Yan, L W Yang, Q W Liu, Yi Dong, J Q Duan, X R Liu, Yong Pan, C H |
| description | Using the profile analysis, the density perturbation transport analysis, and the Doppler reflectometry measurement, for the first time a spontaneous and steady-state particle-transport barrier has been evidenced in the Ohmic plasmas in the HL-2A tokamak with no externally applied momentum or particle input except the gas puffing. A threshold in density has been found for the observation of the barrier. The particle diffusivity is well-like, and the convection is found to be inward outside the well and outward inside the well. The formation of the barrier coincides with the transition between the trapped electron mode and the ion temperature gradient driven mode. |
| doi_str_mv | 10.1103/physrevlett.104.215001 |
| format | Article |
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A threshold in density has been found for the observation of the barrier. The particle diffusivity is well-like, and the convection is found to be inward outside the well and outward inside the well. The formation of the barrier coincides with the transition between the trapped electron mode and the ion temperature gradient driven mode.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/physrevlett.104.215001</identifier><identifier>PMID: 20867107</identifier><language>eng</language><publisher>United States</publisher><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY ; CLOSED PLASMA DEVICES ; CONVECTION ; DENSITY ; DISTURBANCES ; ELECTRONS ; ELEMENTARY PARTICLES ; ENERGY TRANSFER ; FERMIONS ; HEAT TRANSFER ; HL-2A TOKAMAK ; ION TEMPERATURE ; LEPTONS ; MASS TRANSFER ; NEUTRAL-PARTICLE TRANSPORT ; PERTURBATION THEORY ; PHYSICAL PROPERTIES ; PLASMA ; RADIATION TRANSPORT ; STEADY-STATE CONDITIONS ; TEMPERATURE GRADIENTS ; THERMONUCLEAR DEVICES ; TOKAMAK DEVICES ; TRAPPED ELECTRONS</subject><ispartof>Physical review letters, 2010-05, Vol.104 (21), p.215001-215001, Article 215001</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c457t-8366b266009428bd63a20fc77350645410eaa0c365616ffa49b03d1a9abaac163</citedby><cites>FETCH-LOGICAL-c457t-8366b266009428bd63a20fc77350645410eaa0c365616ffa49b03d1a9abaac163</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,2863,2864,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20867107$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/21410702$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Xiao, W W</creatorcontrib><creatorcontrib>Zou, X L</creatorcontrib><creatorcontrib>Ding, X T</creatorcontrib><creatorcontrib>Yao, L H</creatorcontrib><creatorcontrib>Feng, B B</creatorcontrib><creatorcontrib>Song, X M</creatorcontrib><creatorcontrib>Song, S D</creatorcontrib><creatorcontrib>Zhou, Y</creatorcontrib><creatorcontrib>Liu, Z T</creatorcontrib><creatorcontrib>Yuan, B S</creatorcontrib><creatorcontrib>Sun, H J</creatorcontrib><creatorcontrib>Ji, X Q</creatorcontrib><creatorcontrib>Gao, Y D</creatorcontrib><creatorcontrib>Li, Y G</creatorcontrib><creatorcontrib>Yan, L W</creatorcontrib><creatorcontrib>Yang, Q W</creatorcontrib><creatorcontrib>Liu, Yi</creatorcontrib><creatorcontrib>Dong, J Q</creatorcontrib><creatorcontrib>Duan, X R</creatorcontrib><creatorcontrib>Liu, Yong</creatorcontrib><creatorcontrib>Pan, C H</creatorcontrib><creatorcontrib>HL-2A Team</creatorcontrib><title>Observation of a spontaneous particle-transport barrier in the HL-2A tokamak</title><title>Physical review letters</title><addtitle>Phys Rev Lett</addtitle><description>Using the profile analysis, the density perturbation transport analysis, and the Doppler reflectometry measurement, for the first time a spontaneous and steady-state particle-transport barrier has been evidenced in the Ohmic plasmas in the HL-2A tokamak with no externally applied momentum or particle input except the gas puffing. A threshold in density has been found for the observation of the barrier. The particle diffusivity is well-like, and the convection is found to be inward outside the well and outward inside the well. The formation of the barrier coincides with the transition between the trapped electron mode and the ion temperature gradient driven mode.</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>CLOSED PLASMA DEVICES</subject><subject>CONVECTION</subject><subject>DENSITY</subject><subject>DISTURBANCES</subject><subject>ELECTRONS</subject><subject>ELEMENTARY PARTICLES</subject><subject>ENERGY TRANSFER</subject><subject>FERMIONS</subject><subject>HEAT TRANSFER</subject><subject>HL-2A TOKAMAK</subject><subject>ION TEMPERATURE</subject><subject>LEPTONS</subject><subject>MASS TRANSFER</subject><subject>NEUTRAL-PARTICLE TRANSPORT</subject><subject>PERTURBATION THEORY</subject><subject>PHYSICAL PROPERTIES</subject><subject>PLASMA</subject><subject>RADIATION TRANSPORT</subject><subject>STEADY-STATE CONDITIONS</subject><subject>TEMPERATURE GRADIENTS</subject><subject>THERMONUCLEAR DEVICES</subject><subject>TOKAMAK DEVICES</subject><subject>TRAPPED ELECTRONS</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNo9kNtKxDAQhoMo7np4hSXghVddJ4cm20sRT1BQRK_DNJuy1W5Tk-yCb2-k6tXAzPfPMB8hCwZLxkBcjZuvGNy-dyktGcglZyUAOyBzBroqNGPykMwBBCsqAD0jJzG-Qya4Wh2TGYeV0pmck_qpiS7sMXV-oL6lSOPoh4SD87tIRwyps70rUsAhD0KiDYbQuUC7gaaNow91wa9p8h-4xY8zctRiH935bz0lb3e3rzcPRf10_3hzXRdWljoVK6FUw5UCqCRfNWslkENrtRYlKFlKBg4RrFClYqptUVYNiDXDChtEy5Q4JRfTXh9TZ6LtkrMb64fB2WQ4yws08ExdTtQY_OfOxWS2XbSu76fnjC5LCUKIKpNqIm3wMWttzRi6LYYvw8D86DbPWfeL29dZd-5JM-nOwcXviV2zdev_2J9f8Q36JH1I</recordid><startdate>20100528</startdate><enddate>20100528</enddate><creator>Xiao, W W</creator><creator>Zou, X L</creator><creator>Ding, X T</creator><creator>Yao, L H</creator><creator>Feng, B B</creator><creator>Song, X M</creator><creator>Song, S D</creator><creator>Zhou, Y</creator><creator>Liu, Z T</creator><creator>Yuan, B S</creator><creator>Sun, H J</creator><creator>Ji, X Q</creator><creator>Gao, Y D</creator><creator>Li, Y G</creator><creator>Yan, L W</creator><creator>Yang, Q W</creator><creator>Liu, Yi</creator><creator>Dong, J Q</creator><creator>Duan, X R</creator><creator>Liu, Yong</creator><creator>Pan, C H</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>20100528</creationdate><title>Observation of a spontaneous particle-transport barrier in the HL-2A tokamak</title><author>Xiao, W W ; Zou, X L ; Ding, X T ; Yao, L H ; Feng, B B ; Song, X M ; Song, S D ; Zhou, Y ; Liu, Z T ; Yuan, B S ; Sun, H J ; Ji, X Q ; Gao, Y D ; Li, Y G ; Yan, L W ; Yang, Q W ; Liu, Yi ; Dong, J Q ; Duan, X R ; Liu, Yong ; Pan, C H</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c457t-8366b266009428bd63a20fc77350645410eaa0c365616ffa49b03d1a9abaac163</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</topic><topic>CLOSED PLASMA DEVICES</topic><topic>CONVECTION</topic><topic>DENSITY</topic><topic>DISTURBANCES</topic><topic>ELECTRONS</topic><topic>ELEMENTARY PARTICLES</topic><topic>ENERGY TRANSFER</topic><topic>FERMIONS</topic><topic>HEAT TRANSFER</topic><topic>HL-2A TOKAMAK</topic><topic>ION TEMPERATURE</topic><topic>LEPTONS</topic><topic>MASS TRANSFER</topic><topic>NEUTRAL-PARTICLE TRANSPORT</topic><topic>PERTURBATION THEORY</topic><topic>PHYSICAL PROPERTIES</topic><topic>PLASMA</topic><topic>RADIATION TRANSPORT</topic><topic>STEADY-STATE CONDITIONS</topic><topic>TEMPERATURE GRADIENTS</topic><topic>THERMONUCLEAR DEVICES</topic><topic>TOKAMAK DEVICES</topic><topic>TRAPPED ELECTRONS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Xiao, W W</creatorcontrib><creatorcontrib>Zou, X L</creatorcontrib><creatorcontrib>Ding, X T</creatorcontrib><creatorcontrib>Yao, L H</creatorcontrib><creatorcontrib>Feng, B B</creatorcontrib><creatorcontrib>Song, X M</creatorcontrib><creatorcontrib>Song, S D</creatorcontrib><creatorcontrib>Zhou, Y</creatorcontrib><creatorcontrib>Liu, Z T</creatorcontrib><creatorcontrib>Yuan, B S</creatorcontrib><creatorcontrib>Sun, H J</creatorcontrib><creatorcontrib>Ji, X Q</creatorcontrib><creatorcontrib>Gao, Y D</creatorcontrib><creatorcontrib>Li, Y G</creatorcontrib><creatorcontrib>Yan, L W</creatorcontrib><creatorcontrib>Yang, Q W</creatorcontrib><creatorcontrib>Liu, Yi</creatorcontrib><creatorcontrib>Dong, J Q</creatorcontrib><creatorcontrib>Duan, X R</creatorcontrib><creatorcontrib>Liu, Yong</creatorcontrib><creatorcontrib>Pan, C H</creatorcontrib><creatorcontrib>HL-2A Team</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Xiao, W W</au><au>Zou, X L</au><au>Ding, X T</au><au>Yao, L H</au><au>Feng, B B</au><au>Song, X M</au><au>Song, S D</au><au>Zhou, Y</au><au>Liu, Z T</au><au>Yuan, B S</au><au>Sun, H J</au><au>Ji, X Q</au><au>Gao, Y D</au><au>Li, Y G</au><au>Yan, L W</au><au>Yang, Q W</au><au>Liu, Yi</au><au>Dong, J Q</au><au>Duan, X R</au><au>Liu, Yong</au><au>Pan, C H</au><aucorp>HL-2A Team</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Observation of a spontaneous particle-transport barrier in the HL-2A tokamak</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>2010-05-28</date><risdate>2010</risdate><volume>104</volume><issue>21</issue><spage>215001</spage><epage>215001</epage><pages>215001-215001</pages><artnum>215001</artnum><issn>0031-9007</issn><eissn>1079-7114</eissn><abstract>Using the profile analysis, the density perturbation transport analysis, and the Doppler reflectometry measurement, for the first time a spontaneous and steady-state particle-transport barrier has been evidenced in the Ohmic plasmas in the HL-2A tokamak with no externally applied momentum or particle input except the gas puffing. A threshold in density has been found for the observation of the barrier. The particle diffusivity is well-like, and the convection is found to be inward outside the well and outward inside the well. The formation of the barrier coincides with the transition between the trapped electron mode and the ion temperature gradient driven mode.</abstract><cop>United States</cop><pmid>20867107</pmid><doi>10.1103/physrevlett.104.215001</doi><tpages>1</tpages></addata></record> |
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| ispartof | Physical review letters, 2010-05, Vol.104 (21), p.215001-215001, Article 215001 |
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| source | American Physical Society Journals |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY CLOSED PLASMA DEVICES CONVECTION DENSITY DISTURBANCES ELECTRONS ELEMENTARY PARTICLES ENERGY TRANSFER FERMIONS HEAT TRANSFER HL-2A TOKAMAK ION TEMPERATURE LEPTONS MASS TRANSFER NEUTRAL-PARTICLE TRANSPORT PERTURBATION THEORY PHYSICAL PROPERTIES PLASMA RADIATION TRANSPORT STEADY-STATE CONDITIONS TEMPERATURE GRADIENTS THERMONUCLEAR DEVICES TOKAMAK DEVICES TRAPPED ELECTRONS |
| title | Observation of a spontaneous particle-transport barrier in the HL-2A tokamak |
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