The propagation of heat pulses in cylindrical tubes of different dimensions filled with liquid helium is investigated at temperatures between 0.1 and 1.0°K. In the analysis of the data marked differences are noted between the temperatures above about 0.70°K and the lower temperatures. Down to about
The specific heat of liouid helium between 0.25 and 1.9°K
✍ Scribed by H.C. Kramers; J.D. Wasscher; C.J. Gorter
- Publisher
- Elsevier Science
- Year
- 1952
- Weight
- 501 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0031-8914
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✦ Synopsis
Neclcrla~~l synopsis ?Jew measurements were made cf the specific heat of liquid helium, employing a ca.pillary-connected calorimeter and using the demagnetization method with a properly chosen paramagnetic salt for reaching temperatures below 1'K. It was found that the specific heat below 0.6"K satisfies a T3-law as was expected from theoretical predictions.
Above this temperature, the measured values were compared with L a n d a u's formula on the roton specific heat. These new values of the specific heat were used for the recalculation of the entropy of liquid helium II.
📜 SIMILAR VOLUMES
## LETTER TO THE EDITOR The specific heat of liquid helium from 1.5°K down to 0.4°K. We measured the specific heat of liquid helium under its saturated vapour pressure from 1.5 clown to 0.4°K. The temperatures below I. I°K were obtained by adiabatic demagnetization of iron ammonium alum. In this