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分别用硅烷(SiH_4)加氦(He)的混合气体直流辉光放电和在He辉光放电中蒸发锂对HL-1M托卡马克内壁进行了硅化和锂涂覆。在这种壁处理后的托卡马克放电中,杂质和辐射功率损失一般比硼化后更低,出现了强烈的壁抽气效应和低氢再循环特性。这些优异的壁条件导致了多发弹丸注入、低混杂波电流驱动(LHCD)和长脉冲放电等物理实验的重大进展。实验表明:这些涂层可以用氢加氦直流辉光放电清洗掉。
The inner wall of the HL-1M tokamak was silicided and lithium-coated with a DC glow discharge of a mixed gas of silane (SiH 4) and helium (He) and lithium evaporated in a He glow discharge, respectively. In this wall-treated tokamak discharge, the losses of impurities and radiant power are generally lower than after borated, with a strong wall-pumping effect and low hydrogen recirculation characteristics. These excellent wall conditions have led to major advances in physical experiments such as multiple shot injection, low hybrid current drive (LHCD) and long pulse discharge. Experiments show that: these coatings can be washed with hydrogen and helium DC glow discharge.