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Radiation Losses in Ohmically Heated Plasma in the HT-7 Tokamak |
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| Authors: | Zhang Xianmei Wan Baonian Feng Xiaojuan |
| Affiliation: | Department of Physics, East China University of Science and Technology, 200237 Shanghai, China;Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China;Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China;Department of Physics, East China University of Science and Technology, 200237 Shanghai, China |
| Abstract: | Total radiation losses in ohmically heated plasma have been investigated in the HT-7 tokamak after different wall conditionings. Discharges after siliconization and boronization have been studied by using bolomitric measurements. Not only low-Z impurities but also high-Z impurities are reduced obviously after wall conditioning. The fraction of the total radiation loss to the ohmic input increases with increasing line-averaged central electron density. But it decreases with increasing the plasma current IP after wall conditionings. It is slightly lower for a boronized wall than that for a siliconized wall. |
| Keywords: | impurities in plasma radiationloss tokamak |
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