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Stimulated Emission of Fast Alfvén Waves within Magnetically Confined Fusion Plasmas.
- Source :
-
Physical review letters [Phys Rev Lett] 2017 May 05; Vol. 118 (18), pp. 185001. Date of Electronic Publication: 2017 May 04. - Publication Year :
- 2017
-
Abstract
- A fast Alfvén wave with a finite amplitude is shown to grow by a stimulated emission process that we propose for exploitation in toroidal magnetically confined fusion plasmas. Stimulated emission occurs while the wave propagates inward through the outer midplane plasma, where a population inversion of the energy distribution of fusion-born ions is observed to arise naturally. Fully nonlinear first-principles simulations, which self-consistently evolve particles and fields under the Maxwell-Lorentz system, demonstrate this novel "α-particle channeling" scenario for the first time.
Details
- Language :
- English
- ISSN :
- 1079-7114
- Volume :
- 118
- Issue :
- 18
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 28524672
- Full Text :
- https://doi.org/10.1103/PhysRevLett.118.185001