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cryogen$17902$ - traduzione in italiano
CRYOGENIC DEVICE FOR COOLING TO VERY LOW TEMPERATURES, WITH NO MOVING PARTS IN THE LOW-TEMPERATURE REGION, WHOSE COOLING POWER IS PROVIDED BY THE HEAT OF MIXING OF HELIUM-3 AND HELIUM-4
Dry dilution refrigerator; Cryogen-free dilution refrigerator; Dilution fridge
![Schematic diagram of a cryogen-free, or dry, dilution refrigerator precooled by a two-stage [[pulse tube refrigerator]], indicated by the dotted rectangle.](https://commons.wikimedia.org/wiki/Special:FilePath/Dilution refrigerator03.jpg?width=200 "Schematic diagram of a cryogen-free, or dry, dilution refrigerator precooled by a two-stage [[pulse tube refrigerator]], indicated by the dotted rectangle.")
![The inside of a wet [[Oxford Instruments]] helium dilution refrigerator, with the vacuum cans removed.](https://commons.wikimedia.org/wiki/Special:FilePath/Helium dilution cryostat.jpg?width=200 "The inside of a wet [[Oxford Instruments]] helium dilution refrigerator, with the vacuum cans removed.")
cryogen
n. criogeno (di sostanza che causa temperature bassissime)
Definizione
cryogen
['kr???(?)d?(?)n]
¦ noun a substance used to produce very low temperatures.
Wikipedia
Dilution refrigerator
A 3He/4He dilution refrigerator is a cryogenic device that provides continuous cooling to temperatures as low as 2 mK, with no moving parts in the low-temperature region. The cooling power is provided by the heat of mixing of the helium-3 and helium-4 isotopes.
The dilution refrigerator was first proposed by Heinz London in the early 1950s, and was experimentally realized in 1964 in the Kamerlingh Onnes Laboratorium at Leiden University. The field of dilution refrigeration is reviewed by Zu et al.
