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A compound carbon thermometer for the temperature range 0.3-100 K.
A Adolf1, H Djerassi, J Leszczyszyn
1Laboratoire de Physique des Matériaux, Service de Chimie Physique, Centre D'Etudes Nucléaires de Saclay, BP No. 2, 91190 Gif sur Yvette, France.
The Review of Scientific Instruments
|September 1, 1979
Summary
A new compound carbon thermometer combines two resistors for wide-range temperature measurements from 0.3-100 K. This device offers satisfactory performance, extending low-temperature thermometry capabilities.
Area of Science:
- Physics
- Materials Science
- Cryogenics
Background:
- Accurate temperature measurement is crucial in scientific research, especially at cryogenic temperatures.
- Traditional wide-range thermometry often requires multiple specialized sensors.
- Carbon resistors are commonly used for low-temperature measurements.
Purpose of the Study:
- To develop and evaluate a compound carbon thermometer for extended temperature range measurements.
- To assess the feasibility of using a single device for thermometry from 0.3 K to 100 K.
- To compare the performance of the compound thermometer with existing technologies.
Main Methods:
- Constructed a compound carbon thermometer using abreast connections of Speer and Allen-Bradley carbon resistors.
- Tested the thermometer's performance across the temperature interval of 0.3–100 K.
- Analyzed the resistance-temperature characteristics, sensitivity, and data handling.
Main Results:
- The compound carbon thermometer demonstrated satisfactory performance across the 0.3–100 K range.
- The device successfully covered a temperature interval typically requiring two separate thermometers.
- Characterization revealed consistent behavior and analytical tractability of the resistance-temperature data.
Conclusions:
- The compound carbon thermometer effectively extends wide-range thermometry down to 0.3 K.
- This integrated approach simplifies cryogenic temperature measurements.
- The device shows potential for broader application in low-temperature physics and engineering.
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