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Measurements on the viscosity of neon, hydrogen, deuterium and helium as a function of the temperature, between room temperature and liquid hydrogen temperatures

1940; Elsevier BV; Volume: 7; Issue: 3 Linguagem: Inglês

10.1016/s0031-8914(40)90115-x

1873-1767

A. Van Ítterbeek, O. Van Paemel,

Scientific Research and Discoveries

We carried out measurements on the viscosity of neon, deuterium, hydrogen and helium as a function of the temperature, at room temperature and at temperatures obtainable with liquid oxygen and liquid hydrogen. The experimental results are discussed. The viscosity is computed in reduced coordinates and we find that the data obtained for neon and argon (published in Physica 5, 10, 1938) fit one and the same curve. This curve is also coincident with the curve computed by Weber (Physica 6, 551, 1939) for a great number of ordinary gases. The curves obtained for hydrogen and helium have undergone a parallel displacement relative to the general viscosity curve obtained for the ordinary gases and who are not submitted at low temperatures to quantum corrections. We show, moreover, that the extrapolation made by Weber from his curve is not in agreement with the experimental results. In accordance with measurements previously made in this laboratory (Physica 5, 938, 1938) it is again stated that ηD2ηH2 decreases continuously with decreasing temperature (1,40 at room temperature, 1,24 at liquid hydrogen temperatures).