Porosity dependence of sound propagation in liquid $^4$He filled aerogel

Details Porosity dependence of sound propagation in liquid $^4$He filled aerogel Porosity dependence of sound propagation in liquid $^4$He filled aerogel

2003-12-18

arxiv.org/abs/cond-mat/0312485v1

Physics

Condensed Matter

Materials Science

4 pages, 3 figures. The paper has been submitted to PRL on 16 June 2003 and has been declined by Editors on 17 December 2003

Scientific paper

10.1134/1.1804219

Longitudinal sound wave propagation has been studied in an aerogel-liquid $^4$He system for various porosities of aerogel. The superfluid transition was identified as the absorption peak, whose magnitude was suppressed by aerogel. The sound velocity was analyzed within a hydrodynamic theory in both normal and superfluid phases. The absorption peak due to phonon-roton interaction around 1 K was not observed even with the most porous aerogel. The low temperature sound velocity and attenuation show that direct collisions of phonons with aerogel strands plays an important role in the acoustic properties.

Affiliated with

Also associated with

No associations

Rating

Porosity dependence of sound propagation in liquid $^4$He filled aerogel 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 Porosity dependence of sound propagation in liquid $^4$He filled aerogel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Porosity dependence of sound propagation in liquid $^4$He filled aerogel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-307846