Natural ortho-para conversion rate in liquid and gaseous hydrogen
- Physico-Technical Institute, Kharkov (Ukraine)
- Verkin Institute for Low Temperature Physics and Engineering, Kharkov (Ukraine)
The authors measured natural ortho-para conversion rates within a wide region of hydrogen fluid states: at temperatures 17-32 K in the liquid and at temperatures 40-120 K in the gas for densities up to 0.09 g/cm{sup {minus}3}. The experimental data for the gas phase are interpreted within the framework of a theory, the basic distinction of which from Wigner`s approach is that the authors take into account the dependence of the closest distance in a collision of two orthomolecules on their velocity (i.e., temperature). Their theory yields results in good qualitative agreement with experiment in the gas phase. In order to describe the entire bulk of conversion rate data in the hydrogen fluid phases the authors suggest a convenient interpolation formula, which has reasonable physical grounds.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 530912
- Journal Information:
- Journal of Low Temperature Physics, Vol. 107, Issue 1-2; Other Information: PBD: Apr 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Exploratory study of coal-conversion chemistry. Quarterly report, December 20, 1979-March 19, 1980. [Ortho and para-hydroxydiphenylmethanes]
The ortho-to-para conversion in solid hydrogen, catalyzed by hydrogen atoms