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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
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, Engineering and Medicine > 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: |
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| 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) |
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