Solubility of hydrogen isotopes in lithium

Conference · Thu Jan 01 00:00:00 EST 1976

DOI:https://doi.org/10.1016/B978-0-08-021369-9.50051-8· OSTI ID:7185744

Smith, F J; Batistoni, A M; Begun, G M; Land, J F

The individual solubilities of hydrogen, deuterium, and tritium in lithium have been measured as a function of temperature (700 to 1000/sup 0/C) and pressure (0.1 to 760 torr). The individual solubilities decrease with increasing temperature, and, for the same hydrogen isotope concentration in the molten lithium, the equilibrium gas pressures for the isotopes are of the order P/sub T/sub 2// greater than P/sub D/sub 2// greater than P/sub H/sub 2//. When the mole fraction of LiH, LiD, or LiT is less than about 0.1, the temperature dependence of the individual solubilities can be expressed as ln(N/sup -1//sub LiH/ P/sup /sup 1///sup 2///sub H/sub 2//) = 9.842 -- 6242/T(/sup 0/K), ln(N/sup -1//sub LiD/ P/sup /sup 1///sup 2///sub D/sub 2//) = 9.515 -- 5644/T(/sup 0/K), and ln(N/sup -1//sub LiT/ P/sup /sup 1///sup 2///sub T/sub 2//) = 9.226 -- 5085/T(/sup 0/K). In these equations, N is the mole fraction in the liquid phase, P is the equilibrium pressure of the gaseous hydrogen isotope (torr), and T is temperature (/sup 0/K). The mutual solubilities of hydrogen and deuterium in lithium were measured for the plateau region at 800/sup 0/C. Both the total pressure and the individual partial pressures of H/sub 2/, HD, and D/sub 2/ have been determined as a function of the mole fraction of LiH and LiD in the lithium solution with varying hydrogen-to-deuterium ratios. The total pressure and the partial pressures of hydrogen and deuterium in the plateau region at 800/sup 0/C may be expressed as P/sup /sup 1///sub 2///sub total/ (torr) = -3 N/sub LiH//(N/sub LiH + N/sub LiD/) + 15.9, P/sup 1///sup 2//sub H/sub 2// (torr) = 12.9 N/sub LiH//(N/sub LiH/ + N/sub LiD/), and P/sub D/sub 2///sup /sup 1///sup 2// (torr) = 15.9 N/sub LiD//(N/sub LiH/ + N/sub LiD/).

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• OSTI ID: 7185744
• Report Number(s): CONF-760631-1; TRN: 04-016965
• Resource Relation: Conference: 9. symposium on fusion technology, Garmisch-Partenkirchen, F.R. Germany, 14 Jun 1976
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DEUTERIUM
SOLUBILITY
HYDROGEN
LITHIUM
SOLVENT PROPERTIES
LITHIUM DEUTERIDES
CHEMICAL REACTION YIELD
LITHIUM HYDRIDES
TRITIUM
LOW PRESSURE
MEDIUM VACUUM
VERY HIGH TEMPERATURE
ALKALI METAL COMPOUNDS
ALKALI METALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CRYOGENIC FLUIDS
DEUTERIDES
DEUTERIUM COMPOUNDS
ELEMENTS
FLUIDS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
LITHIUM COMPOUNDS
METALS
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES
YIELDS
360104* - Metals & Alloys- Physical Properties
700209 - Fusion Power Plant Technology- Component Development & Materials Testing
060200 - Fusion Fuels- Processing- (-1987)