Transport and deceleration of fusion products in microturbulence
Artikel i vetenskaplig tidskrift, 2016

The velocity-space distribution of alpha particles born in fusion devices is subject to modification at moderate energies due to turbulent transport. Therefore, one must calculate the evolution of an equilibrium distribution whose functional form is not known a priori. Using a novel technique, applicable to any trace impurity, we have made this calculation for fully nonlinear gyrokinetic simulations not only possible, but particularly efficient. We demonstrate a microturbulence-induced departure from the local slowing-down distribution, an inversion of the energy distribution, and associated modifications to the alpha heating and pressure profiles in an ITER-like scenario.

Författare

George Wilkie

Chalmers, Fysik, Subatomär fysik och plasmafysik

I Abel

Princeton Center for Theoretical Science

M Landreman

University of Maryland

William D. Dorland

University of Maryland

Physics of Plasmas

1070-664X (ISSN) 1089-7674 (eISSN)

Vol. 23 6 060703- 060703

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Fundament

Grundläggande vetenskaper

Ämneskategorier

Fusion, plasma och rymdfysik

DOI

10.1063/1.4953420