Effective Viscosity of Liquid Helium Isotope Mixtures
Recently results were reported’ from this laboratory on the effective viscosity of dilute mixtures (X3 < 10%) between 20 m°K and 1°K. In the present work we have extended the ranges of concentration up to X3 = 100% and of temperature up to 2°K so that all accessible areas of the phase diagram have now been investigated. Only in the region of the tricritical point (X 3 = 67%; T = 0.87°K) have serious difficulties been encountered, and further work there will be necessary to improve the technique.
KeywordsEffective Viscosity Tricritical Point Accessible Area Logarithmic Decrement Filling Capillary
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- 2.J.C. Wheatley, Progress in Low Temperature Physics,C.J. Gorter, ed., North-Holland, Amsterdam (1970), Vol. 6, p. 77.Google Scholar