Pressure Dependence of Second Sound Velocity in Liquid Helium. II
Phys. Rev. 81, 444 – Published 1 February, 1951
DOI: https://doi.org/10.1103/PhysRev.81.444
Abstract
The velocity of second sound as a function of pressure and temperature has been measured to 0.95°K by a pulse method. The quantitative dependence of the rise in velocity upon pressure is found to support the role of the phonons in contributing to the normal fluid flow alone.