Tritium in Pd and Pd0.80Ag0.20

Abstract

Solubility measurements of H, D and T in Pd and Pd0.80Ag0.20 have been performed in a very large temperature range. A simple analytical expression is given for the equilibrium constants which describes the equilibrium between the hydrogen atoms dissolved in a metal at infinite dilution and the hydrogen molecules in the gas phase. From this expression the partial enthalpies and entropies of H, D, T in metals can easily be calculated. Also the vibrational ground state energies of H, D and T in Pd and Pd0.80Ag0.20 relative to the energy of atomic hydrogen at rest could be determined’accurately. In addition, the isotopic dependence of the phase boundaries in Pd will be discussed.KeywordsPhase BoundaryGround State EnergyHydrogen MoleculeInfinite DilutionPartial EnthalpyThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.