Ultra low temperatures in a helium transport vessel: a dilution refrigerator to achieve 30 mK by continuous absorption pumping
Техника свеpхнизких темпеpатуp
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PACS: 07.20.McАнотація
A novel design of dilution refrigerator (DR) is described for continuous operation inside a transport Dewar with a neck diameter more than 51 mm. The time required for cooling the mixing chamber from room temperature to 30 mK is 3.5-4.5 h. Warming up to 300 K reguires 0.5-1.0 h. The cooling power achieved is 40 mikroW at 100 mK. The DR is fitted with 6 mm line of sight access down to the mixing chamber. A distinguishing feature of this refrigerator is the absence of a traditional gas handling system, which makes it easy to transport in a small car and quickly commission in a new laboratory within a few hours.
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1997-05-10
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G. J. Batey, J. P. White, W. D. Duncan, A. F. Simpson, and V.A. Mikheev, Ultra low temperatures in a helium transport vessel: a dilution refrigerator to achieve 30 mK by continuous absorption pumping: Техника свеpхнизких темпеpатуp, Low Temp. Phys. 23, (1997) [Fiz. Nizk. Temp. 23, 655-661, (1997)].
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