title: Multitude of core-localized shear Alfvén waves in a high-temperature fusion plasma.
abstract: Evidence is presented for a multitude of discrete frequency Alfvén waves in the core of magnetically confined high-temperature fusion plasmas. Multiple diagnostic instruments confirm wave excitation over a wide spatial range from the device size at the longest wavelengths down to the thermal ion Larmor radius. At the shortest scales, the poloidal wavelengths are comparable to the scale length of electrostatic drift wave turbulence. Theoretical analysis confirms a dominant interaction of the modes with particles in the thermal ion distribution traveling well below the Alfvén velocity.
authors.affiliation: Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543, USA. rnazikian@pppl.gov
authors.forename: R
authors.initials: R
authors.lastname: Nazikian
authors.forename: H L
authors.initials: HL
authors.lastname: Berk
authors.forename: R V
authors.initials: RV
authors.lastname: Budny
authors.forename: K H
authors.initials: KH
authors.lastname: Burrell
authors.forename: E J
authors.initials: EJ
authors.lastname: Doyle
authors.forename: R J
authors.initials: RJ
authors.lastname: Fonck
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authors.lastname: Gorelenkov
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authors.lastname: Holcomb
authors.forename: G J
authors.initials: GJ
authors.lastname: Kramer
authors.forename: R J
authors.initials: RJ
authors.lastname: Jayakumar
authors.forename: R J
authors.initials: RJ
authors.lastname: La Haye
authors.forename: G R
authors.initials: GR
authors.lastname: McKee
authors.forename: M A
authors.initials: MA
authors.lastname: Makowski
authors.forename: W A
authors.initials: WA
authors.lastname: Peebles
authors.forename: T L
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authors.lastname: Rhodes
authors.forename: W M
authors.initials: WM
authors.lastname: Solomon
authors.forename: E J
authors.initials: EJ
authors.lastname: Strait
authors.forename: M A
authors.initials: MA
authors.lastname: Vanzeeland
authors.forename: L
authors.initials: L
authors.lastname: Zeng