【摘要】 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。更多还原

【Abstract】 An experimental study on a two-stage G-M refrigerator operating in the liquid helium temperature region with the cold regenerator outside of the displacer has been studied. The results of the preliminary experimental study show that the lowest temperature has reached the liquid helium temperature. Discussion on the dead volume increased in this type of G-M refrigerator and the new type of cold head heat-exchanger has also been done.更多还原