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Electron current drive by fusion-product-excited lower hybrid drift instability

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Cook, James William S., Chapman, Sandra C. and Dendy, R. O. (2010) Electron current drive by fusion-product-excited lower hybrid drift instability. Physical Review Letters, Vol.105 (No.25). article no. 255003 . doi:10.1103/PhysRevLett.105.255003

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.105.255003

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Abstract

We present first principles simulations of the direct collisionless coupling of the free energy of fusion-born ions into electron current in a magnetically confined fusion plasma. These simulations demonstrate, for the first time, a key building block of some “alpha channeling” scenarios for tokamak experiments. Spontaneously excited obliquely propagating waves in the lower hybrid frequency range undergo Landau damping on resonant electrons, drawing out an asymmetric tail in the electron parallel velocity distribution, which carries a current.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Tokamaks, Plasma (Ionized gases), Magnetic fields, Fusion, Landau damping
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 2010
Dates:
DateEvent
2010Published
Volume: Vol.105
Number: No.25
Number of Pages: 4
Page Range: article no. 255003
DOI: 10.1103/PhysRevLett.105.255003
Status: Peer Reviewed
Publication Status: Published
Funder: Engineering and Physical Sciences Research Council (EPSRC), European Commission (EC), Euratom
Grant number: EP/G054950/1 (EPSRC)

Data sourced from Thomson Reuters' Web of Knowledge

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