COMPARISON OF THE VIBRATIONS OF THE HELIUM-II–VAPOR INTERFACE IN A U-SHAPED CHANNEL WITH A MONODISPERSE BACKFILL AND WITHOUT IT

Experimental data on the movement of the superfl uid helium in a U-shaped cylindrical channel fi lled with and without a permeable porous backfi ll of metal monodisperse spheres are considered. The results of experiments are presented in the form of the time dependences of the position of the helium-II–vapor interface in the channel. A comparison of the amplitudes and frequencies of vibration of this interface, depending on the pressure in the channel, in the cases of free channel and where it is fi lled with porous backfi ll has been performed. It is shown that, in the channel with a monodisperse porous backfi ll, a stationary state of the interface is possible
Experimental data on the movement of the superfl uid helium in a U-shaped cylindrical channel fi lled with and without a permeable porous backfi ll of metal monodisperse spheres are considered. The results of experiments are presented in the form of the time dependences of the position of the helium-II–vapor interface in the channel. A comparison of the amplitudes and frequencies of vibration of this interface, depending on the pressure in the channel, in the cases of free channel and where it is fi lled with porous backfi ll has been performed. It is shown that, in the channel with a monodisperse porous backfi ll, a stationary state of the interface is possible
Author:  Yu. Yu. Puzina, A. P. Kryukov
Keywords:  superfl uid helium, experiment, channel, vibrations, monodisperse backfi ll, heat fl ow, interface
Page:  1727