A COMBINATION ISOTHERMAL-ADIABATIC LOW-TEMPERATURE CALORIMETER

摘要

A description of a low-temperature calorimeter for the temperature range 13° to 300°K is presented. The apparatus is believed to be unique in that it may be readily operated in an isothermal or adiabatic manner.nThe performance of the calorimeter is demonstrated by presentation of heat capacity measurements on a Calorimetry Conference Standard Sample of benzoic acid. The data obtained agree well with the published data of the National Bureau of Standards on this Standard.