Ultrasonic propagation velocity in helium-hydrogen mixtures
V. V. PashkovAcademy of Sciences of the Ukrainian SSR Physicotechnical Institute of Low Temperatures, , Khar'kovE. V. KonovodchenkoAcademy of Sciences of the Ukrainian SSR Physicotechnical Institute of Low Temperatures, , Khar'kov
ABI
Annotatsiya
A pulse technique is employed to measure the ultrasonic propagation velocity in solutions of helium in liquid hydrogen in the temperature region T = 18–30° K at pressures up to 110 atm. The adiabatic compressibility is obtained. The experimental results are analyzed in terms of a variant of perturbation theory which takes into account the quantum properties.
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