Characteristics of the Divertor Plasma in Neutral-Beam-Heated ASDEX Discharges
作者： Y. Shimomura , M. Keilhacker , K. Lackner , H. Murmann
DOI: 10.1088/0029-5515/23/7/002
关键词: Atomic physics 、 Materials science 、 Plasma 、 Plasma parameters 、 Heating power 、 Plasma density 、 Field line 、 Range (particle radiation) 、 Beam (structure) 、 Divertor
摘要: Scrape-off plasma parameters have been measured in ASDEX both the divertor chamber and mid-plane, for neutral-injection powers of up to 2.5 MW. Measurements demonstrate existence strong inhomogeneities parallel field lines show dependence density temperature on bulk density, heating power mode operation (gettered/ungettered, different slit widths, additional gas puffing divertor). Three recycling regimes, characterized by dependences are identified agreement with a numerical fluid model scrape-off plasma. In particularly attractive high-recycling regime, temperatures could be kept around 7 eV whole range tested.
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