A simple helium-3 cryostat for specific heat measurements between 0.4 and 4.2 K

Concepts

EngineeringMechanical EngineeringHeat TransferThermal AnalysisThermodynamicsCooling SystemsHeat PumpsTemperature MeasurementCryogenic EngineeringCryogenic Heat TransferCryogenic InstrumentationCryogenic System DesignCryogenic SystemsCryogenic Temperature MeasurementCryogenic Thermal PropertiesCryostat Design

Abstract

The design and construction of a helium-3 cryostat suitable for specific heat measurements between 0.4 and 4.2°K are described. The helium-3 system has been simplified by the elimination of a backing pump, and requires only 500 cm3 of gas. The cryostat also incorporates a mechanical heat switch.

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