Table 4 Comparison between the experimental temperature measured using the principle of detailed balance and the reading from the thermocouple used to control the temperature of the sample holder with a resistive heater.

From: An approach for the measurement of the bulk temperature of single crystal diamond using an X-ray free electron laser

 

Thermocouple (K)

Experimental data (K)

Thermocouple (K)

Experimental data (K)

\(Q = 0.81 \pm 0.1{\AA }^{-1}\)

\(294 \pm 2\)

\(297 \pm 18\)

\(503 \pm 8\)

\(519 \pm 37\)

\(Q = 0.52 \pm 0.1{\AA }^{-1}\)

\(294 \pm 2\)

\(303 \pm 20\)

\(503 \pm 8\)

\(532 \pm 47\)

\(Q = 0.81 \pm 0.1{\AA }^{-1}\)

\(294 \pm 2\)

\(294 \pm 25\)

\(503 \pm 8\)

\(496 \pm 26\)

  1. The uncertainty corresponds to the \(1\sigma\) level from the \(\chi ^2\) fit of the data, assuming normally distributed residuals. The error for the thermocouple corresponds to the uncertainty on the temperature measurement using a type K thermocouple for the cold case while it corresponds to the maximum of the previous uncertainty and the temperature fluctuations from the PID controller in the heated case.