Method for the production of superfluid helium under pressure at

Details Method for the production of superfluid helium under pressure at Method for the production of superfluid helium under pressure at

1975-02-11

1976-11-23

Sprague, Kenneth W.

Refrigeration

Processes

Transferring heat between diverse function portions of...

62467R, 62502, F25B 4100

Patent

active

039928934

ABSTRACT:
A bath of helium-4 is cooled to a temperature below the .lambda. point so as to convert the lower portion of the bath to a superfluid-helium zone. A narrow stream between a top and a bottom portion of the zone is subjected to a critical heat flux corresponding to a temperature gradient by cooling the bath in the bottom portion of the superfluid-helium zone, the temperatures thus attainable being considerably lower than the .lambda. transition point.

REFERENCES:
patent: 3195322 (1965-07-01), London
patent: 3581512 (1971-06-01), Staas et al.
patent: 3589138 (1971-06-01), Severijns et al.

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