Dewar with improved efficiency

Refrigeration – Storage of solidified or liquified gas – Including cryostat

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62 513, F25B 1900

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active

053478185

ABSTRACT:
An improved Dewar including concentrically aligned neck, tail and belly sections in which the belly surrounds the tail and the tail includes a lamba plate, cooled by the flow of liquid helium from the belly, which absorbs residual heat which would otherwise reach liquid helium in the tail.

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A. Sherman & V. Figueroa, "A Portable .sup.3 He Cryostat for Studies in Astrophysics", Adv. in Cryo. Eng., vol. 25, Proc. of 1979 conference, Aug. 1979.
A. Demishev & N. Nazarenko, "Cryostat for Operation with an Adjustable Helium Level", Instr. and Exp. Techn., vol. 21, No. 4, pt. 2, p. 1153, Jul.-Aug. 1978.
D. Mead, "Modified Helium Cryostat for an Asymmetric Michelson Interferometer", Infrared Phy., vol. 18, No. 3, pp. 257-258, May 1978.
D. Bois & P. Pinard, "Cryostat a helium liquid pour mesures d'absoption optique", J. Phys. E., vol. 6, No. 2, pp. 120-121, Feb. 1973.

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