Published September 1, 1988
| Version v1
Journal article
High-resolution second-sound velocity measurements near the λ point of helium
Creators
- 1. Physics Department, Stanford University, Stanford, California 94305
Description
We report measurements of the second-sound velocity in superfluid helium in the region very close to the λ point. The sound was detected using a powdered-paramagnetic-salt thermometer with a superconducting readout system. Large gravitational and power effects were observed near the transition. The corrected data yield the value 0.6740 +- 0.0005 for the exponent characterizing the divergence of the superfluid density at the transition
Additional details
Publishing Information
- Journal Title
- Physical Review, B: Condensed Matter
- Journal Volume
- 38
- Journal Issue
- 7
- Series
- Phys. Rev., B: Condens. Matter.
- Journal Page Range
- 4465-4468
- ISSN
- 0163-1829
- CODEN
- PRBMD
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 20001179
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- DENSITY; DETECTION; FLUCTUATIONS; GRAVITATIONAL INTERACTIONS; HELIUM; LAMBDA POINT; MEASURING METHODS; SECOND SOUND; SUPERFLUIDITY; VELOCITY
- Descriptors DEC
- BASIC INTERACTIONS; ELEMENTS; NONMETALS; PHYSICAL PROPERTIES; RARE GASES; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE; VARIATIONS