Speaker
Mr
Ola Embréus
(Chalmers University of Technology)
Description
Full kinetic modeling of runaway dynamics is remarkably expensive computationally due to the range in scales involved, requiring simultaneous resolution of both the near-isotropic thermal electron population in the eV energy scale, as well as the strongly anisotropic runaways in the tens-of-MeV range. Because of this, a fluid description of runaway dynamics is highly desirable, where runaway generation and decay rates are expressed only in terms of background plasma parameters.
In this contribution, using the most accurate models available for radiation losses and knock-on collisions, we present a first look at revised runaway growth rates. We discuss the applicability of such a fluid description, derive more accurate growth rates as well as extend present theories to also describe the decay of a runaway beam within the same framework.
Primary author
Mr
Ola Embréus
(Chalmers University of Technology)
Co-authors
Dr
Adam Stahl
(-)
Linnea Hesslow
(Chalmers University of Technology)
Prof.
Tünde Fülöp
(Chalmers University of Technology)
