Accession Number : AD0601054

Title :   DRASTIC REDUCTION OF WARM-UP RATE WITHIN A DEWAR SYSTEM BY HELIUM DESORPTION.

Descriptive Note : Physical Sciences research papers

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Gianino,Peter D.

Report Date : JAN 1964

Pagination or Media Count : 12

Abstract : A method is described whereby the time rate of temperature change is drastically reduced within a glass double-dewar system over the interval 4.2 to 77K. The problem of reducing the rate of change is solved successfully by inserting a small amount of activated charcoal in the inner dewar. The explanation of why it succeeds is presented and results are given showing the drastic reduction of warm-up rate for various amounts of charcoal. Some advantages of such a simple scheme are listed. (Author)

Descriptors :   (*CRYOGENICS, CONTAINERS), (*CONTAINERS, CRYOGENICS), TEMPERATURE CONTROL, CHARCOAL, THERMAL INSULATION, HELIUM

Distribution Statement : APPROVED FOR PUBLIC RELEASE