Primary Results of Lithium Coating for the Improvement of Plasma Performance in EAST
Primary Results of Lithium Coating for the Improvement of Plasma Performance in EAST
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DOI：
10.1088/1009-0630/12/6/02
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发表时间：
2010-12
影响因子：
1.7
通讯作者：
G. Zuo;Jiansheng Hu;Jian-gang Li;N. Luo;Liqun Hu;J. Fu;Kaiyun Chen;A. Ti;Lili Zhang
中科院分区：
文献类型：
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作者：
G. Zuo;Jiansheng Hu;Jian-gang Li;N. Luo;Liqun Hu;J. Fu;Kaiyun Chen;A. Ti;Lili Zhang
在EAST上首次成功地进行了离子回旋频率范围（ICRF）等离子体锂涂层。实验结果表明，真空室中的氘气和杂质都得到了有效的减少。特别地，在锂涂覆之后氘的分压降低了约5倍。等离子体中的杂质辐射减少，电子温度提高约50%。此外，可以容易地获得具有高参数的可重复的等离子体放电，例如更高的等离子体电流和密度。这些结果表明等离子体性能得到改善。即使只注入了2g锂，Li膜的有效寿命也提高到40次。
First lithium coating associated with ion cyclotron range of frequency (ICRF) plasma was performed successfully in EAST. Results in reduction of both residual impurity and deuterium in the vacuum vessel were obtained. Particularly the partial pressure of deuterium after the lithium coating was reduced by about a factor of 5. Impurity radiation in the plasma was reduced and electron temperature increased by about 50%. Moreover, reproducible plasma discharges with high parameters, such as higher plasma current and density, could be easily obtained. These results showed that plasma performance was improved. Even though only 2 g of lithium were injected, the effective lifetime of the Li film was raised up to 40 shots.