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期刊论文
Modification test of staged pulse tube refrigerator for temperatures below 4 K
，-0001，（）：
Structure modification tests of a staged pulse tube refrigerator have been carried out for the purpose of increasing the performance and simplicity. The influence of oper-ation parameters on cooling effect has been tested. To reach liquid helium tempera-tures by a two-stage pulse tube refrigerator, a double-orifice configuraton is utilized for enhancing the phase shift effect. Experimental results and a discussion are also presented.
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