Abstract
We describe the construction, operation and performance of a fully automated low temperature differential micro-calorimeter for heat capacity measurements on small samples (m < 100 mg) in the temperature range from 15 K to 300 K. The instrument is operated using different calorimetric methods, in particular adiabatic differential scanning. Its reliability is demonstrated by measuring the heat capacity of 23 mg of copper and 37 mg of cyclopentane with an error of less than 2%.
Zusammenfassung
Es wird der Aufbau, die Funktions- und Arbeitsweise eines vollautomatisierten Differential-Mikrokalorimeters für Wärmekapazitätsmessungen kleiner Proben (m < 100 mg) im Temperaturbereich 15–300 K beschrieben. Die Funktionsweise des Gerätes beruht auf verschiedenen kalorimetrischen Methoden, insbesondere aufadiabatischem Differential-Scanning, Seine Zuverlässigkeit wird durch die Messung der Wärmekapazität einer 23 mg-Kupferprobe und einer 37 rag-Cyclopentanprobe mit einem Me\fehler von kleiner als 2% demonstriert.
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Rahm, U., Gmelin, E. Low temperature micro-calorimetry by differential scanning. Journal of Thermal Analysis 38, 335–344 (1992). https://doi.org/10.1007/BF01915498
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DOI: https://doi.org/10.1007/BF01915498