Formation of a mesa shaped phonon pulse in superfluid $^4$He

Details Formation of a mesa shaped phonon pulse in superfluid $^4$He Formation of a mesa shaped phonon pulse in superfluid $^4$He

2009-12-18

arxiv.org/abs/0912.3793v1

Physics

Condensed Matter

Other Condensed Matter

29 pages, 13 figures

Scientific paper

We present a theory for the formation of a mesa shaped phonon pulse in superfluid $^4$He. Starting from the hydrodynamic equations of superfluid helium, we obtain the system of equations which describe the evolution of strongly anisotropic phonon systems. Such systems can be created experimentally. The solution of the equations are simple waves, which correspond to second sound in the moving phonon pulse. Using these exact solutions, we describe the expansion of phonon pulses in superfluid helium at zero temperature. This theory gives an explanation for the mesa shape observed in the measured phonon angular distributions. Almost all dependencies of the mesa shape on the system parameters can be qualitatively understood.

Affiliated with

Also associated with

No associations

Rating

Formation of a mesa shaped phonon pulse in superfluid $^4$He does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Formation of a mesa shaped phonon pulse in superfluid $^4$He, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Formation of a mesa shaped phonon pulse in superfluid $^4$He will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-381465