Neutron Reflection from the Surface of Liquid 4He with and without a Layer of 3He

Details Neutron Reflection from the Surface of Liquid 4He with and without a Layer of 3He Neutron Reflection from the Surface of Liquid 4He with and without a Layer of 3He

2008-11-19

arxiv.org/abs/0811.3141v1

Physics

Condensed Matter

Other Condensed Matter

LT25

Scientific paper

We report and discuss the first neutron reflection measurements from the free surface of normal and superfluid 4He and of liquid 3He-4He mixture. In case of liquid 4He the surface roughness is different above and below the lambda transition, being smoother in the superfluid state. For the superfluid, we also observe the formation of a surface layer ~200 A thick which has a subtly different neutron scattering cross-section. The results can be interpreted as an enhancement of Bose-Einstein condensate fraction close to the helium surface. We find that the addition of 3He isotopic impurities leads to the formation of Andreev levels at low temperatures.

Affiliated with

Also associated with

No associations

Rating

Neutron Reflection from the Surface of Liquid 4He with and without a Layer of 3He 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 Neutron Reflection from the Surface of Liquid 4He with and without a Layer of 3He, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neutron Reflection from the Surface of Liquid 4He with and without a Layer of 3He will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-429372