Stimulated emission of fast Alfven waves within magnetically confined fusion plasmas

Stimulated emission of fast Alfven waves within magnetically confined fusion plasmas

Stimulated emission of fast Alfven waves within magnetically confined fusion plasmas 150 150 Mathew
CCFE-PR(16)42

Stimulated emission of fast Alfven waves within magnetically confined fusion plasmas

A fast Alfven 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 “ a -particle channeling ” scenario for the first time.

Collection:
Journals
Journal:
Physical Review Letters
Publisher:
APS
Published date:
05/01/2017