OPTICAL CRYOSTAT Russian patent published in 2013 - IPC G01J1/02 

FIELD: measurement equipment.

SUBSTANCE: base for this cryostat is a casing 1, made in the form of a sleeve from a heat insulation material (for instance, foam plastic). On the bottom of the inner part of the casing there is a sample holder 2, made of a material with high heat conductivity for reduction of temperature gradient (for instance, of copper). In the bottom of the casing 1, near the generating inner wall, there is one or several holes 3. The bottom outer part of the body is made so that it is tightly (without gaps) installed into a neck part of a vessel 4 with a liquid cryoagent 5. In process of evaporation the cold gaseous cryoagent arrives via holes 3 inside the casing and displaces warm (moist) air from it, and therefore eliminates the possibility of freezing of a holder and a sample investigated on it. Vapours of the coolant wash the holder, which results in its cooling.

EFFECT: invention makes it possible to exclude variation of incident radiation spectrum due to availability of windows, to make it possible to do investigation in wide range of temperatures, is simple to implement and inexpensive.

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