Differences Between ac and dc Determinations of Germanium Thermometer Resistances
- 1 March 1973
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 44 (3), 339-341
- https://doi.org/10.1063/1.1686127
Abstract
The resistances of several germanium thermometers are found to differ for ac and dc measurements. At 300 K, these differences are frequency independent from roughly 5 to 103 Hz. The ac resistances always are smaller, and the approximate temperature differences (Tdc − Tac) vary from 100 mk at 77 K to 0.2 mK below 17 K.This publication has 5 references indexed in Scilit:
- An Improved ac Bridge Circuit for Use in Four-Terminal Resistance ThermometryReview of Scientific Instruments, 1972
- A Paramagnetic Salt Temperature Scale, 0.9 to 18 KMetrologia, 1972
- An A-C resistance thermometer bridgeJournal of Research of the National Bureau of Standards, Section C: Engineering and Instrumentation, 1970
- Low temperature thermometry, 1 to 30 KC R C Critical Reviews in Solid State Sciences, 1970
- A precise automatic a.c. potentiometer for low temperature resistance thermometryJournal of Physics E: Scientific Instruments, 1969