Fig. 2: Plasma spatial profiles and boron source.
From: Observation of a reduced-turbulence regime with boron powder injection in a stellarator
a–c, Measured radial profiles of electron density ne (a), electron temperature Te (b) and ion temperature Ti (c) averaged over a 100 ms time window, in the case with (red) and without (blue) B powder injection. Error bars represent standard deviation in time. Polynomial fits of the profiles are shown with solid lines (Methods). d, Te from EMC3-EIRENE simulations for case #167,234, together with B powder grain trajectory (solid line) computed by the DUSTT code, with the resulting B neutral atom source (dots). R and Z are the radial and vertical coordinates in a cylindrical frame of reference with its origin on the torus axis. e, B neutral source remapped on the normalized radial coordinate reff/a99, for all discussed cases.
