In ASDEX Upgrade helium plasmas, He2+ dominates tungsten divertor erosion, and the chosen sheath boundary condition can change the predicted tungsten source by an order of magnitude.
B2.5 plasma mesh is in black and EIRENE neutral mesh in gray
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Tungsten erosion and scrape-off layer transport modelling in L-mode helium plasma discharges in ASDEX Upgrade
In ASDEX Upgrade helium plasmas, He2+ dominates tungsten divertor erosion, and the chosen sheath boundary condition can change the predicted tungsten source by an order of magnitude.