ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The surface tension of liquid3He and4He was measured near the gas-liquid critical points in the reduced temperature range 3×10−4〈t〈2×10−1, where t ≡ (T c −T)/T c . The critical exponents were found to be μ3=1.289±0.015 for3He and μ4=1.306±0.017 for4He. These values are very close to those for classical liquids, and are consistent with the value of 1.28 predicted by Widom, but are apparently different from the exponents previously obtained for liquid helium isotopes, which are near unity. The critical coefficients show good agreement with the quantum-corrected corresponding states theory for the Lennard-Jones 6–12 potential discussed by Young. The interface thickness is deduced from Widom's theory to bed=d 0t−v′ withd 30=0.14±0.03nm and v′3=0.57±0.04 for3He, andd 40=0.37±0.07 nm and v′4=0.58±0.01 for4He.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00681495
