New Results for the Realization of the Superfluid Transition Temperature of Helium
- 63 Downloads
A two-chamber sealed cell has been developed to realize the superfluid transition temperature of helium. A series of temperature plateaus are obtained while a series of small heat flows are applied to the capillary connecting the two chambers. The plateau temperatures are extrapolated to determine the transition temperature at zero heat flow. This paper reports the new results for the realization of the transition temperature of helium using seven cells. More than 30 measurements have been made in two laboratories since 2002, as five cells sealed in 2000 and two cells sealed in 2009 are used. The standard deviation of the measurements is ~0.02 mK.
KeywordsTemperature Fixed point Helium Realization Sealed cell Superfluid transition
Unable to display preview. Download preview PDF.
- 1.L. Peng, M. Yuzhu, H. Chaosheng, in Proceedings of International Conference of the Temperature and Thermal Measurements, ed. by Z. Bao (Standard Press of China, Beijing, 1997), pp. 28–34Google Scholar
- 3.I. Peroni, F. Pavese, D. Ferri, L. Peng, Z. Qinggeng, Y. Lihong, in Proceedings of TEMPMEKO 2001, 8th International Symposium on Temperature and Thermal Measurements in Industry and Science ed. by B. Fellmuth, J. Seidel, G. Scholz (VDE Verlag, Berlin, 2002), pp. 391–396Google Scholar
- 4.L. Peng, M. Yuzhu, H. Chaosheng, F. Pavese, I. Peroni, D. Head, R. Rusby, in Temperature: Its Measurement and Control in Science and Industry, vol. 7, part 1, ed. by D.C. Ripple (American Institute of Physics New York, 2003), pp. 191–195Google Scholar
- 5.R.V. Duncan, G. Ahlers, in Temperature: Its Measurement and Control in Science and Industry, vol. 6, part 1, ed. by J.F. Schooley (American Institute of Physics, New York, 1992), pp. 243–245Google Scholar