Mass flow through solid 4He induced by the fountain effect

Details Mass flow through solid 4He induced by the fountain effect Mass flow through solid 4He induced by the fountain effect

2011-06-06

arxiv.org/abs/1106.1084v1

Physics

Condensed Matter

Other Condensed Matter

20 pages, 22 figures, 7 tables

Scientific paper

Using an apparatus that allows superfluid liquid 4He to be in contact with hcp solid \4he at pressures greater than the bulk melting pressure of the solid, we have performed experiments that show evidence for 4He mass flux through the solid and the likely presence of superfluid inside the solid. We present results that show that a thermomechanical equilibrium in quantitative agreement with the fountain effect exists between two liquid reservoirs connected to each other through two superfluid-filled Vycor rods in series with a chamber filled with solid 4He. We use the thermomechanical effect to induce flow through the solid and measure the flow rate. On cooling, mass flux appears near T = 600 mK and rises smoothly as the temperature is lowered. Near T = 75 mK a sharp drop in the flux is present. The flux increases as the temperature is reduced below 75 mK. We comment on possible causes of this flux minimum.

Affiliated with

Also associated with

No associations

Rating

Mass flow through solid 4He induced by the fountain effect 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 Mass flow through solid 4He induced by the fountain effect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mass flow through solid 4He induced by the fountain effect will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-390110