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Adsorption pumping for obtaining ULT in3He Cryostats and3He-4He Dilution Refrigerators

✍ Scribed by Graham Batey; Vladimir Mikheev

Book ID
110422159
Publisher
Springer US
Year
1998
Tongue
English
Weight
378 KB
Volume
113
Category
Article
ISSN
0022-2291

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πŸ“œ SIMILAR VOLUMES

3He/4He dilution refrigerator without a
3He/4He dilution refrigerator without a pumped 4He stage
✍ K. Uhlig πŸ“‚ Article πŸ“… 1987 πŸ› Elsevier Science 🌐 English βš– 272 KB

A 3He/4He dilution refrigerator is described where the instreaming 3He is precooled and liquefied by a counterflow heat exchanger which makes use of the enthalpy of the cold 3He gas pumped out of the still, and by subsequent Joule-Thomson expansion. This condenser replaces the usual 4He condenser.

Operation of 3He4He dilution refrigerato
Operation of 3He4He dilution refrigerator with newly developed turbomolecular pump
✍ K. Uhlig; W. Hehn πŸ“‚ Article πŸ“… 1989 πŸ› Elsevier Science 🌐 English βš– 214 KB

torque on the tight contacts improved the contact resistances from values between 5 and I0 /~ to values between 1 and 2/zQ. 6 Tests with variable forces on the contacts were also carried out. The effect of the force was not reversible and the results for a particular force depended on whether the le

Compact universal 3He and 4He charcoal p
Compact universal 3He and 4He charcoal pumped insertable cryostat
✍ V. Stepankin; V. Trofimov; B.S. Neganov πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 308 KB

Universal cryostat for applications in solid state and cryogenic particle detector research, is designed as compact insert with 51 mm fitting diameter and providing temperatures down to 0.3 K. The key features of the cryostat are charcoal pumping of both 3He and 4He gases, which are permanently stor