| 1 | Evidence of vapor shielding effect on heat flux loaded on flowing liquid lithium limiter in EAST显示文摘A lithium(Li)vapour layer was formed around a flowing liquid Li limiter to shield against the plasma incident power and reduce limiter heat flux in the EAST tokamak.The results revealed that after a plasma operation of a few seconds,the layer became clear,which indicated a strong Li emission with a decrease in the limiter surface temperature.This emission resulted in a dense vapour around the limiter,and Li ions moved along the magnetic fleld to form a green shielding layer on the limiter.The plasma heat flux loaded on the limiter,measured by the probe installed on the limiter,was approximately 52%lower than that detected by a fast-reciprocating probe at the same radial position without the limiter in EAST.Additionally,approximately 42%of the parallel heat flux was dissipated directly with the enhanced Li radiation in the discharge with the liquid metal infused trenches(LIMIT)limiter.This observation revealed that the Li vapour layer exhibited an excellent shielding effect to liquid Li on plasma heat flux,which is a possible beneflt of liquid-plasma-facing components in future fusion devices. | 李成龙 左桂忠 R MANIGI K TRITZ D ANDRUCZYK 张斌 梁瑞荣 D OLIVER 孙震 徐伟 孟献才 黄明 汤中亮 高彬富 颜宁 胡建生 | 2022 | Plasma Science and Technology2022，24，9： | 1 |
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