Helium liquefaction by Gifford-McMahon cycle cryogenic refrigerator.
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This paper describes the principal design features and performance test results of a three-stage Gifford-McMahon cycle cryogenic refrigerator by which we have achieved no-load temperature of 3.3K and succeeded in helium liquefaction. The refrigeration capacity was 20mW at 4.2K and the helium liquefaction rate was 10cm3/h. The keypoint of the success is the selection of GdRh and Gd0.5Er0.5Rh compounds as a regenerator material. This is the first success that regenerative cycle cryogenic refrigerator has liquefied helium without auxiliary refrigerator for precooling.
- 公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)の論文
公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会) | 論文
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