2. |
- Aleksandrovskii, A. N., et al.
(författare)
-
Thermal expansion of solid parahydrogen at helium temperatures
- 1989
-
Ingår i: Soviet Journal of Low Temperature Physics. - 0360-0335. ; 15:8, s. 492-493
-
Tidskriftsartikel (refereegranskat)abstract
- Thermal expansion of solid parahydrogen is investigated in the temperature range from 0.9 to 5 K. The content of the orthomodification in parahydrogen is 0.13 at. %, and that of nonhydrogen impurities is less than 2 10 - 3 at. %. No anisotropy in thermal expansion was observed within the experimental error. The temperature dependence of the linear expansion coefficient can be described by the expression α=1.82 10 - 7 T3. The obtained values of α are in good agreement with the available data on compressibility and ([partial derivate]p/[partial derivate]T)V. The Grüneisen coefficient is γ=3αV/CV`T=2.00 ± 0.25.
|
|