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Qualitative AC calorimetry under high pressure using piston-cylinder apparatus without adiabatic approximation
Hayate Ito1, Kazuki Komatsu1, Hiroyuki Kagi1
1Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan.
None:
We have developed an alternating current (AC) calorimetry method using a piston-cylinder apparatus for measuring heat capacity and thermal conductivity under high pressures up to 2.1 GPa and at low temperatures down to ∼40 K. This new AC calorimetry is based on a planar one-dimensional heat conduction model employing a pair of platinum resistors, enabling the measurement of thermal properties in liquid samples-an application that was not straightforward with conventional AC calorimetry. We demonstrate the effectiveness of this method through its application to NH4Cl, cyclohexene, methylcyclohexane, and ice.
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