✦ LIBER ✦

A combined 3He-4He dilution refrigerator

✍ Scribed by V.N. Pavlov; B.S. Neganov; J. Konicek; J. Ota

Publisher: Elsevier Science
Year: 1978
Tongue: English
Weight: 447 KB
Volume: 18
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(78)90122-4

No coin nor oath required. For personal study only.

✦ Synopsis

A refrigerator capable of operating both in evaporation and dilution modes is described. The refrigerator provides preliminary cooling of investigated samples down to a starting temperature of about 0.3 K and permits the location of samples directly in the mixing chamber as well as their replacement at any stage of operation. The replacement of samples lasts about 20 min. The cooling time for a sample from room temperature down to 15 mK is about 3 h. The minimal temperature is 10 mE, and the 3He circulation rate is about 5 X 10-4 mol s -1.

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