Rayleigh linewidth in4He near the gas-liquid critical point |
| |
Authors: | Kohji Ohbayashi Akira Ikushima |
| |
Affiliation: | (1) The Institute for Solid State Physics, The University of Tokyo, Roppongi, Minato-ku, Tokyo, Japan |
| |
Abstract: | Spectra of Rayleigh-scattered light in4He near the gas-liquid critical point have been measured, using a photon correlation method. Fitting the obtained relaxation times to Kawasaki's expression with background modification, we have obtained along the critical isochore the correlation length =(3.6±0.78) –0.534±0.046 Å and the high-frequency shear viscosity *=21.5±3.6 µP. * has been revealed to be in good agreement with the regular part of the viscosity r=21±2µP. The singular part of the thermal diffusivity has been determined to beD
Ts
=(4.9±2.7)×10–5 –0.543±0.046 cm2/sec along the critical isochore. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|