Cryostat Calorimeter

One method of cooling the calorimeter system is to put it inside a low-temperature thermostat (cryostat see later). This method is often used in low-temperature calorimetry and works down to temperatures well below 1K. 

Table la Record of experimental observations. Negative readings are digital voltmeter measurements. Other readings are from resistance bridge. First five numbers are calorimeter, cryostat, sample, standard resistor, and time interval between readings... 

In Fig. 27 a schematic representation of a typical cryostat adiabatic calorimeter is shown. In this case hquid nitrogen is designated as the coolant. (The number of walls in the cryostat depends upon the temperature range selected. With hehum temperatures, one needs an outer cryostat for liquid nitrogen and an inner cryostat for the liquid helium.) The various parts are as follows ... 

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