ABSTRACT

The distinctive features that characterize the wave processes in the fluid in a pipe are the dispersion of the speed of sound due to the influence of the pipe walls and also the initiation at certain frequencies of higher oscillation modes having phase velocities that exceed ten times the speed of sound in the free liquid. Identification of the various modes of vibrations occurring in the liquid-shell system is the essence of acoustomagnetic spectroscopy which is described in this chapter.