Extended Data Fig. 3: Conventional divertor front movement experiment #49303.
a Progression of total radiation location as measured by the infrared video bolometer (IRVB67) indicating a transition from mainly attached radiation near the strikepoint to volumetric radiation above the X-point at the high-field-side. The time basis was adapted to match the other instruments; the bright feature on the central column at z ≈ -0.3 is an artefact of the inversion and not yet a MARFE68. b Molecular D2 Fulcher band emission inversions from the MWI44 and X-point imaging systems, showing how the front position transitions from attached to above the X-point at the high-field side. c Line-averaged electron density and requested main chamber gas flow rate with the timestamps of the radiation and emission plots indicated as well as the approximate time of transition from attached D2 Fulcher band emission to above the X-point. d Two consecutive Fulcher band emission inversions around the transition point, indicating how the transition from attached emission to above the X-point occurs within one acquisition window (2.5 ms).
