The nature of plasma fluxes to surfaces nearly tangential to the magnetic field

摘要: Plasma fluxes to edge structures, such as limiters, probes and divertor plates, are generally assumed be due parallel transport only-and all limiters divertors have been designed on the basis of this standard model. A number experimental results indicated substantial surfaces which parallel, or nearly B-a result is inconsistent with new model presented includes direct cross-field deposition structures. In case process amplified by a 2D 3D concentration, funnelling, effect induced in confined plasma, inboard structure. As result, plasma wetted area large structures inner wall substantially greater than model-a beneficial effect. For sufficiently oblique angles between B tiles, it may that heat particle tiles dominated direct, transport. This would major implications for exploitation configurations very flux expansion