First Evidence for the Existence of Odd Toroidal Alfven Eigenmodes (TAEs) from the Simultaneous Observation of Even and Odd TAEs on the Joint European Torus

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Experimental evidence is presented for the existence of the theoretically predicted odd Torodicity-induced Alfven Eigenmode (TAEs) from the simultaneous appearance of odd and even TAEs in a normal shear discharge. The modes are observed in low central magnetic shear plasmas created by injecting lower hybrid current drive. A fast ion population was created by applying ion cyclotron heating at the high field side to excite the TAEs in the weak magnetic shear region. The odd TAEs were identified from their frequency, mode number, and timing relative to the even TAEs.

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Kramer, G.J.; Sharapov, S.E.; Nazikian, R.; Gorelenkov, N.N.; Budny, R. & contributors, JET-EFDA January 15, 2003.

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Description

Experimental evidence is presented for the existence of the theoretically predicted odd Torodicity-induced Alfven Eigenmode (TAEs) from the simultaneous appearance of odd and even TAEs in a normal shear discharge. The modes are observed in low central magnetic shear plasmas created by injecting lower hybrid current drive. A fast ion population was created by applying ion cyclotron heating at the high field side to excite the TAEs in the weak magnetic shear region. The odd TAEs were identified from their frequency, mode number, and timing relative to the even TAEs.

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1.3 Megabytes pages

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INIS; OSTI as DE00809963

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  • Other Information: PBD: 15 Jan 2003

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  • Report No.: PPPL-3768
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/809963 | External Link
  • Office of Scientific & Technical Information Report Number: 809963
  • Archival Resource Key: ark:/67531/metadc737226

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  • January 15, 2003

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  • Oct. 18, 2015, 6:40 p.m.

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  • April 15, 2016, 9:20 p.m.

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Kramer, G.J.; Sharapov, S.E.; Nazikian, R.; Gorelenkov, N.N.; Budny, R. & contributors, JET-EFDA. First Evidence for the Existence of Odd Toroidal Alfven Eigenmodes (TAEs) from the Simultaneous Observation of Even and Odd TAEs on the Joint European Torus, report, January 15, 2003; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc737226/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.