Abstract This paper describes the first operation three-stage superfluid Stirling refrigerator (SSR) and reports on its preliminary experimental performance. Previous SSR’s were single or two-stage machines. The three-stage SSR has a total internal volume of 239 cm3 and uses two 12.1 cm3 and one 3.0 cm3 Kapton heat exchangers. Operating from a high temperature of 1.07 K, and with a 3.0% 3He-4He mixture, this SSR achieves a low temperature of 338 mK. The single successful operation of this machine did not surpass the best low temperature results of previous two-stage SSR’s. This lower performance is attributed to a low level helium leak into the vacuum insulation space.


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    Title :

    Preliminary Experimental Results Using a Three-Stage Superfluid Stirling Refrigerator


    Contributors:

    Published in:

    Publication date :

    2003-01-01


    Size :

    6 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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