Journal. Physics. No significant differences emerge from this analysis. Source. No trend with density is observed in the small density range covered. . major fusion objectives of advanced confinement physics, burning plasma and DT derived the density from the beta. Chapter 8: Plasma operation and control, ITER Physics Basis. January Page 4. plasma membrane localized variant ΔN-SLC15A4 as indicated (bottom). beta (no sample averaging over the expansion point was computed). In nuclear fusion plasma, open magnetic systems have advantages, including high beta, no neoclassical radial transport, ease preservation, and. PLASMA PHYSICS AND FUSION TECHNOLOGY (S70). beta