A continuous flow, liquid helium cooled vibration cryostat with a useful cold space of 200 mm diameter and 160 mm height is described. The cryostat (weight 9 kg) is attached to the armature of a vibration magnet. Cool-down to 4.2 K takes ~ 15 rain and warm-up 1 h. The vacuum jacket and radiation shi
Helium cryostats for physical studies in space
β Scribed by A.B. Fradkov; V.F. Troitskii
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 275 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0011-2275
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β¦ Synopsis
The design of liquid helium cryostats intended to operate on-board space apparatus is described. The distinctive features of such cryostats are the presence of a phase separator preventing the ejection of liquid from the helium space, and a special neck support to reduce gas convection in it when the cryostat alters its position in space. Results are given of tests of the designs developed, both under laboratory conditions and in earth satellites.
π SIMILAR VOLUMES
A glass helium cryostat with copper shieM for optical and magneto-optical studies is described. The shield-insert placed in the nitrogen dewar without hindering visual observation at the liquid helium level, prevents scattering of light by the bubbles of boiling nitrogen.
The design of a continuous flow helium cryostat is described for optical studies with an optical fixed high-pressure chamber in the temperature range from 4 to 300 K. The liquid helium consumption for 4 K is 21 h-', and less than 0.5 1 h-'for temperatures above 20 K.