Planar Geometry near the Lambda Point
โ Scribed by Lipa, J. A.; Swanson, D. R.; Nissen, J. A.; Geng, Z. K.; Williamson, P. R.; Stricker, D. A.; Chui, T. C. P.; Israelsson, U. E.; Larson, M.
- Book ID
- 118117662
- Publisher
- The American Physical Society
- Year
- 2000
- Tongue
- English
- Weight
- 162 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0031-9007
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๐ SIMILAR VOLUMES
Heat capacity measurements of the liquid helium lambda transition in confined geometries have long been in disagreement with scaling theories of second order phase transitions. We present measurements of a 19 micron helium film which extend previous work to near macroscopic size. We find that the ne
of the ideal gas approximation for rotons, and a qualitative roton liquid model is proposed. The temperature dependence of viscosity of the liquid model is found to correspond with the observed viscosity above 1.8ยฐK, and with the discontinuity in the temperature derivative of viscosity at the lambda