In this letter, we report the very first results of SOLPS4.3 simulations of a liquid lithium (Li) divertor, including vapor shielding effects. A peculiarity of Li as a target coating material is the strong dependence of the erosion rate on the target temperature. We have implemented a new erosion model in SOLPS, taking this dependence into account. Simulations of the T15-MD tokamak divertor with Li-coated divertor targets have been performed. Li erosion is determined by physical sputtering, evaporation, and thermal sputtering. The results of the simulations show that a shielding effect occurs, providing a reduction of the target heat flux to values below 8 MW m⁻². At the same time, the upstream plasma dilution in the high-power regimes, where shielding is most efficient, is very strong, meaning that in practical terms, it may be difficult to rely on the shielding effect for heat flux control in the configuration considered.

在这封信中，我们报告了液态锂（Li）偏滤器的SOLPS4.3模拟的最初结果，包括蒸汽屏蔽效应。Li作为目标涂层材料的特殊性是腐蚀速率对目标温度的强烈依赖性。考虑到这种依赖性，我们在SOLPS中实施了新的侵蚀模型。已经对带有锂涂层分流器目标的T15-MD托卡马克分流器进行了仿真。锂的腐蚀是通过物理溅射，蒸发和热溅射来确定的。仿真结果表明，发生了屏蔽效应，从而将目标热通量降低到低于8 MW m ^-2的值。同时，屏蔽效率最高的高功率模式中的上游血浆稀释度非常高，这意味着，从实际意义上讲，在所考虑的配置中，可能难以依靠屏蔽效应来控制热通量。