This is a measurement of the Specific Heat Capacity vs. T of OREX-800-107-104, sample #1, measured across a broad temperature spectrum 3-300 K. The sample was pressed from a loose powder under 3.3 GPa of uniaxial pressure for 10 minutes to produce a solid sample pellet.

20250208_DSC_BC_OREX-800107-104_1_DSCHeatTabular_478.csv

20250208_DSC_BC_OREX-800107-104_1_DSCHeatTabular_478.yaml

20250208_DSC_BC_OREX-800107-104_1_methodDescription_1.pdf

20250208_DSC_BC_OREX-800107-104_1_methodDescription_1.yml

20250208_DSC_BC_OREX-800107-104_1_methodDescription_2.pdf

20250208_DSC_BC_OREX-800107-104_1_methodDescription_2.yaml

20250208_DSC_BC_OREX-800107-104_1_report_3976.pdf

20250208_DSC_BC_OREX-800107-104_1_report_3976.yaml

This material is supported by NASA under contract NNM10AA11C issued through the New Frontiers program.

Differential Scanning Calorimetry

(BC)Quantum Design Physical Property Measurement System (QD-PPMS)

Boston College

Temperature of the sample in Kelvin. The heat capacity pucks are calibrated against our sample chamber thermometers, which have an accuracy of 1%, to first order one would expect this same ~1% error to carry over to the calibration of the HC thermometry.

Specific heat capacity is the amount of heat energy (Joules) required to raise the temperature of a unit mass of a substance (kilogram) by one degree Kelvin.

Error of the specific heat capacity measurement calculated on the basis of the fit of the exponential decrease in the temperature over time during the measurement.

Pressure is given in units of Torr. This is the pressure (Torr) of Helium gas in the cryostat surrounding the sample. 1 Torr = 133.332 Pa

Thermal coupling, in percentage, between sample and platform as determined from two-tau model. 100% indicates perfect thermal contact. 0% indicates no thermal contact. Thermal coupling % varies with a change in bath temperature (temperature set point of the measurement). 

Total heat capacity, in uJ/K, of addenda.

Error of the specific heat capacity of the addenda measurement (platform plus N-grease) calculated on the basis of the fit of the exponential decrease in the temperature over time during the measurement.

Determined by mean square deviation of fit from model and expressed as normalized chi square.

Long time constant, in seconds, of the sample.

Number of measurement points taken by QD-MPMS for a particular measurement application.

Measurement time for a heat pulse to be measured when a heat pulse is applied and heats up the sample and platform, then the heat pulse is shut off and the sample and platform cool down.

This is a measurement of the Specific Heat Capacity vs. T of OREX-800107-104 pressed pellet.

Analysis details for 20250208_DSC_BC_OREX-800107-104_1, including sample data and tabular header information.

Description and photos of sample prep for OREX-800107-193

Analysis figures and images for 20250208_DSC_BC_OREX-800107-104_1, including various measurement figures and Bennu sample images.

Astromat

QD-PPMS Differential Scanning Calorimetry Specific Heat Capacity vs. T measurement of pellet sample OREX-800107-104

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