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A Pomeranchuk cell which is precooled and pressurized by a He4-cycling He3 - He4 dilution refrigerator

✍ Scribed by B. van den Brandt; W. Griffioen; W.Th. Wenckebach; K.W. Taconis; R. de Bruyn Ouboter


Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
612 KB
Volume
22
Category
Article
ISSN
0011-2275

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✦ Synopsis


This paper deals with a special Pomeranchuk cooling device which is used in combination with a He4-cycling He3-He 4 dilution refrigerator at high pressures. The lowest temperature obtained was 1. 1 mK.


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A discussion is presented on the problem of choosing the lengths and the diameters of the various tubes in a He 3-He a dilution refrigeration system, which are directly connected to the mixing chamber(s). The treatment is based on recently obtained explicit solutions of the differential equations de