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Experimental evaluation of the viscosity of 56.5% Bi–43.5% Pb eutectic melt at 150°С in a pressure range from 3 to 32 GPa on the basis of measurement of the shock wave width has been carried out. It was found that melt viscosity increases by 3–4 orders of magnitude under compression as compared to standard measurements at atmospheric pressure.

Measurements of the width of a shock wave in glycerol dependent on the pressure of shock compression were taken to improve the method of determination of liquids viscosity. It was found that the time of growth of parameters in a shock wave decreases to the limit of time resolution of modern measurements, which is approximately 1 ns at the shock compression pressure of around 2.5 GPa. The values of viscosity, obtained at these parameters, are in agreement with experimental data. The transition to stepwise shock compression expands the pressure range, available for measurement by this method, and also makes possible the opportunity to vary the temperature.