Electron temperature fluctuations associated with the weakly coherent mode in the edge of I-mode plasmas
New measurements of electron temperature fluctuations associated with the weakly coherent mode (WCM) during improved mode, or I-mode plasmas (Whyte et al 2010 Nucl. Fusion. 50 105005) at Alcator C-Mod (Marmar et al 2007 Fusion. Sci. Technol. 51 3261) are presented in this paper. The measurements are...
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| Language: | en_US |
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IOP Publishing
2013
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| Online Access: | http://hdl.handle.net/1721.1/81467 https://orcid.org/0000-0002-9001-5606 https://orcid.org/0000-0003-2951-9749 |
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| author | Phillips, P. White, Anne E. Sung, Choongki Dominguez, Arturo Cziegler, Istvan Whyte, Dennis G Hubbard, Amanda E Hughes Jr, Jerry Terry, James L |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Phillips, P. White, Anne E. Sung, Choongki Dominguez, Arturo Cziegler, Istvan Whyte, Dennis G Hubbard, Amanda E Hughes Jr, Jerry Terry, James L |
| author_sort | Phillips, P. |
| collection | MIT |
| description | New measurements of electron temperature fluctuations associated with the weakly coherent mode (WCM) during improved mode, or I-mode plasmas (Whyte et al 2010 Nucl. Fusion. 50 105005) at Alcator C-Mod (Marmar et al 2007 Fusion. Sci. Technol. 51 3261) are presented in this paper. The measurements are made with a 32-channel, high-resolution profile electron cyclotron emission radiometer. The WCM electron temperature fluctuations are localized to a 1 cm region inside the last closed flux surface. The WCM electron temperature fluctuation level is measured in several different I-mode discharges and is in the range 1% [~ over T][subscript e/T[subscript e] < 2%, which is an order of magnitude smaller than the WCM density fluctuation level. The WCM edge fluctuations observed in I-mode are believed to play a role in increasing particle transport but not energy transport in the edge of I-mode plasmas. The large difference between normalized density and electron temperature fluctuation amplitudes provides new evidence that the WCM fluctuations can separately affect energy and particle transport. |
| first_indexed | 2024-09-23T14:50:44Z |
| format | Article |
| id | mit-1721.1/81467 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:50:44Z |
| publishDate | 2013 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/814672023-02-26T02:54:23Z Electron temperature fluctuations associated with the weakly coherent mode in the edge of I-mode plasmas Phillips, P. White, Anne E. Sung, Choongki Dominguez, Arturo Cziegler, Istvan Whyte, Dennis G Hubbard, Amanda E Hughes Jr, Jerry Terry, James L Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Massachusetts Institute of Technology. Plasma Science and Fusion Center White, Anne E. Whyte, Dennis G. Hubbard, Amanda E. Sung, Choongki Hughes, Jerry W. Dominguez, Arturo Terry, James L. Cziegler, Istvan New measurements of electron temperature fluctuations associated with the weakly coherent mode (WCM) during improved mode, or I-mode plasmas (Whyte et al 2010 Nucl. Fusion. 50 105005) at Alcator C-Mod (Marmar et al 2007 Fusion. Sci. Technol. 51 3261) are presented in this paper. The measurements are made with a 32-channel, high-resolution profile electron cyclotron emission radiometer. The WCM electron temperature fluctuations are localized to a 1 cm region inside the last closed flux surface. The WCM electron temperature fluctuation level is measured in several different I-mode discharges and is in the range 1% [~ over T][subscript e/T[subscript e] < 2%, which is an order of magnitude smaller than the WCM density fluctuation level. The WCM edge fluctuations observed in I-mode are believed to play a role in increasing particle transport but not energy transport in the edge of I-mode plasmas. The large difference between normalized density and electron temperature fluctuation amplitudes provides new evidence that the WCM fluctuations can separately affect energy and particle transport. United States. Dept. of Energy (DE-FC02-99-ER54512-CMOD) 2013-10-21T18:51:49Z 2013-10-21T18:51:49Z 2011-11 2011-04 Article http://purl.org/eprint/type/JournalArticle 0029-5515 1741-4326 http://hdl.handle.net/1721.1/81467 White, A.E., P. Phillips, D.G. Whyte, A.E. Hubbard, C. Sung, J.W. Hughes, A. Dominguez, J. Terry, and I. Cziegler. “Electron temperature fluctuations associated with the weakly coherent mode in the edge of I-mode plasmas.” Nuclear Fusion 51, no. 11 (November 1, 2011): 113005. https://orcid.org/0000-0002-9001-5606 https://orcid.org/0000-0003-2951-9749 en_US http://dx.doi.org/10.1088/0029-5515/51/11/113005 Nuclear Fusion Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc/3.0 application/pdf IOP Publishing MIT Web Domain |
| spellingShingle | Phillips, P. White, Anne E. Sung, Choongki Dominguez, Arturo Cziegler, Istvan Whyte, Dennis G Hubbard, Amanda E Hughes Jr, Jerry Terry, James L Electron temperature fluctuations associated with the weakly coherent mode in the edge of I-mode plasmas |
| title | Electron temperature fluctuations associated with the weakly coherent mode in the edge of I-mode plasmas |
| title_full | Electron temperature fluctuations associated with the weakly coherent mode in the edge of I-mode plasmas |
| title_fullStr | Electron temperature fluctuations associated with the weakly coherent mode in the edge of I-mode plasmas |
| title_full_unstemmed | Electron temperature fluctuations associated with the weakly coherent mode in the edge of I-mode plasmas |
| title_short | Electron temperature fluctuations associated with the weakly coherent mode in the edge of I-mode plasmas |
| title_sort | electron temperature fluctuations associated with the weakly coherent mode in the edge of i mode plasmas |
| url | http://hdl.handle.net/1721.1/81467 https://orcid.org/0000-0002-9001-5606 https://orcid.org/0000-0003-2951-9749 |
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