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针对研制的一种蓄冷器外置型式的液氦温区G-M制冷机进行了实验研究。初步的实验结果表明,该机的制冷温度已达到液氦温区。此外就该机特有的结构新增死隙及新型冷头换热器对制冷机性能的影响进行了探讨。
An experimental study was carried out on a G-M refrigerator with external type of accumulator, which is a liquid helium temperature zone. Preliminary experimental results show that the machine’s refrigeration temperature has reached the liquid helium temperature zone. In addition, the unique structure of the machine to add a dead space and a new cold head heat exchanger on the performance of the refrigerator were discussed.