โ Scribed by D.S. Betts; R.G. Scurlock
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Several aspects of carbon thermometry below 1 K are discussed. Some calibrations, performed on home-made carbon resistors, are presented. The lowest reliable calibration temperature was 25 mK. The reproducibility after thermal cycling of these resistors appeared to be good. Comments are given on our
In order to avoid possible sources of heat leaks into liquid 3He-4He mixtures we have constructed an experimental setup using only materlals of high purity. The inner part of an Ag-cell was furnished with a 700~-Ag sinter (A = llOm 2) and two vlbratlng wires. The temperature of the cell wall was mea
The simple temperature dependence of carbon and germanium resistors in the variable-range hopping regime is applied for thermometry below 1 K. The linear dependence of In(R) on T -x (1/4 ~< x ~< 1/2) does not require the usual fitting procedure and makes calibration and thermometry more convenient.