Using finite element modeling based on the COMSOL package, we analyzed the static and dynamic performance of a multistage cryocooler, the coldest stage of which is constituted of thermoelectric legs. Using published data on the achievable parameters of lanthanum-cerium hexaborides, we modeled a single and double-stage thermoelectric cooler. Estimates are also provided for an N-stage cooler. The results can be used for practical realization of additional cooling stages for reaching temperatures below 1.8 K in commercially available cryostats.

中文翻译：

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多级热电 La(Ce)B6 低温冷却器

使用基于 COMSOL 软件包的有限元建模，我们分析了多级低温冷却器的静态和动态性能，其中最冷的级由热电腿构成。使用已发表的六硼化镧-铈可实现参数的数据，我们对单级和双级热电冷却器进行了建模。还提供了 N 级冷却器的估算值。该结果可用于实际实现额外的冷却阶段，以在商用低温恒温器中达到低于 1.8 K 的温度。