Gyrokinetic study of slowing-down α particles transport due to trapped electron mode turbulence

• DOI: 10.1063/1.5060628
• Publication Date: 2018-12-13T20:49:00Z
• Authors: S. M. Yang; C. Angioni; T. S. Hahm; D. H. Na; Y. S. Na
• Keywords: Electron temperature; Gyrokinetics; Particle (ecology)

Transport of α particles due to trapped electron mode (TEM) turbulence is investigated from nonlinear and quasilinear gyrokinetic simulations. We consider both slowing-down Maxwellian distribution functions for identify compare diffusive convective parts particle transport as a function the particle's energy normalized background plasma temperature. find that TEM induces much lower energetic such fusion products than thermal Helium ions in trace limit. This disparity our study found be even greater reported previously ion temperature gradient [C. Angioni A. G. Peeters, Phys. Plasmas. 15, 052307 (2008)].