Some features of the disruption instability in reversed shear TFTR plasmas
The behaviour of MHD perturbations before and during disruptions in TFTR reversed shear plasmas with q sub(min) approximately 2 was analyzed. In the q sub(min) region, tearing modes, wavelike modes, and mixed tearing plus wavelike modes are followed by disruption. Sometimes a helical snake (helix) a...
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| Veröffentlicht in: | Nuclear fusion 1999-01, Vol.39 (Special Issu), p.1971-1976 |
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| container_end_page | 1976 |
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| container_issue | Special Issu |
| container_start_page | 1971 |
| container_title | Nuclear fusion |
| container_volume | 39 |
| creator | Semenov, IB Mirnov, S V McGuire, K M Bell, M G Fredrickson, ED Okabayashi, M Savrukhin, P V Taylor, G Vershkov, V A Zakharov, LE |
| description | The behaviour of MHD perturbations before and during disruptions in TFTR reversed shear plasmas with q sub(min) approximately 2 was analyzed. In the q sub(min) region, tearing modes, wavelike modes, and mixed tearing plus wavelike modes are followed by disruption. Sometimes a helical snake (helix) appears at the X point of the q sub(min) island. The local outward electron energy transport near the X point can be explained by the development of `positive' magnetic islands (islands with positive current perturbations). It is proposed that the disruption is initiated when the X point of the magnetic islands coincides in one toroidal position near the torus equator. |
| format | Article |
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In the q sub(min) region, tearing modes, wavelike modes, and mixed tearing plus wavelike modes are followed by disruption. Sometimes a helical snake (helix) appears at the X point of the q sub(min) island. The local outward electron energy transport near the X point can be explained by the development of `positive' magnetic islands (islands with positive current perturbations). 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It is proposed that the disruption is initiated when the X point of the magnetic islands coincides in one toroidal position near the torus equator.</description><subject>Electron transport properties</subject><subject>Magnetohydrodynamics</subject><subject>Plasma stability</subject><subject>Tokamak devices</subject><issn>0029-5515</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><recordid>eNqNyr0OgjAUQOEOmog_73A3J5JiqcpsJMZR2clVLqGmUOxtTXx7HXwAp_MNZyISKTdFqnWmZ2LO_JAyyzOlEnG-up6gJQzRE4NrIXQEjWEfx2DcAGbggDdjTXh_DZ5e5Jka4I7QQ1VWFxgtco-8FNMWLdPq14VYl8fqcEpH756RONS94TtZiwO5yPUu38pCar1X_58fiIw_-w</recordid><startdate>19990101</startdate><enddate>19990101</enddate><creator>Semenov, IB</creator><creator>Mirnov, S V</creator><creator>McGuire, K M</creator><creator>Bell, M G</creator><creator>Fredrickson, ED</creator><creator>Okabayashi, M</creator><creator>Savrukhin, P V</creator><creator>Taylor, G</creator><creator>Vershkov, V A</creator><creator>Zakharov, LE</creator><scope>7TC</scope></search><sort><creationdate>19990101</creationdate><title>Some features of the disruption instability in reversed shear TFTR plasmas</title><author>Semenov, IB ; Mirnov, S V ; McGuire, K M ; Bell, M G ; Fredrickson, ED ; Okabayashi, M ; Savrukhin, P V ; Taylor, G ; Vershkov, V A ; Zakharov, LE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_miscellaneous_7460905583</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Electron transport properties</topic><topic>Magnetohydrodynamics</topic><topic>Plasma stability</topic><topic>Tokamak devices</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Semenov, IB</creatorcontrib><creatorcontrib>Mirnov, S V</creatorcontrib><creatorcontrib>McGuire, K M</creatorcontrib><creatorcontrib>Bell, M G</creatorcontrib><creatorcontrib>Fredrickson, ED</creatorcontrib><creatorcontrib>Okabayashi, M</creatorcontrib><creatorcontrib>Savrukhin, P V</creatorcontrib><creatorcontrib>Taylor, G</creatorcontrib><creatorcontrib>Vershkov, V A</creatorcontrib><creatorcontrib>Zakharov, LE</creatorcontrib><collection>Mechanical Engineering Abstracts</collection><jtitle>Nuclear fusion</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Semenov, IB</au><au>Mirnov, S V</au><au>McGuire, K M</au><au>Bell, M G</au><au>Fredrickson, ED</au><au>Okabayashi, M</au><au>Savrukhin, P V</au><au>Taylor, G</au><au>Vershkov, V A</au><au>Zakharov, LE</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Some features of the disruption instability in reversed shear TFTR plasmas</atitle><jtitle>Nuclear fusion</jtitle><date>1999-01-01</date><risdate>1999</risdate><volume>39</volume><issue>Special Issu</issue><spage>1971</spage><epage>1976</epage><pages>1971-1976</pages><issn>0029-5515</issn><abstract>The behaviour of MHD perturbations before and during disruptions in TFTR reversed shear plasmas with q sub(min) approximately 2 was analyzed. In the q sub(min) region, tearing modes, wavelike modes, and mixed tearing plus wavelike modes are followed by disruption. Sometimes a helical snake (helix) appears at the X point of the q sub(min) island. The local outward electron energy transport near the X point can be explained by the development of `positive' magnetic islands (islands with positive current perturbations). It is proposed that the disruption is initiated when the X point of the magnetic islands coincides in one toroidal position near the torus equator.</abstract></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0029-5515 |
| ispartof | Nuclear fusion, 1999-01, Vol.39 (Special Issu), p.1971-1976 |
| issn | 0029-5515 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_746090558 |
| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Electron transport properties Magnetohydrodynamics Plasma stability Tokamak devices |
| title | Some features of the disruption instability in reversed shear TFTR plasmas |
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