A study of mechanisms of hydrogen diffusion in separation devices: Final report
Technical Report
·
OSTI ID:5925250
Physical properties of hydrogen diffusion in transition metals show considerable potential for technical applications. Towards developing a quantum statistical theory of diffusion, we have constructed and developed a microscopic, dynamic model appropriate for hydrogen in a transition metal. Our work is based on the notion that the basic aggregates of transport are spin clusters of either Fermi or Bose type. Our theory is able to encompass much of the known basic facts including the reversed isotope effect in diffusion. Our model also provides new information on long-time behavior in the velocity autocorrelation function, intrinsic mobility and diffusion which can grow anomalously. To obtain time-dependent properties of our model, we developed a new technique called the method of recurrence relations. This method is a general mathematical technique appropriate for solving time-dependent many-body problems. 34 refs.
- Research Organization:
- Georgia Univ., Athens (USA). Dept. of Physics
- DOE Contract Number:
- AS09-77ER01023
- OSTI ID:
- 5925250
- Report Number(s):
- DOE/ER/01023-7; ON: DE88000328
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
657002 -- Theoretical & Mathematical Physics-- Classical & Quantum Mechanics
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BOSONS
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL MODELS
CRYSTAL STRUCTURE
DIFFUSION
ELECTRONIC STRUCTURE
ELEMENTS
FERMIONS
HEISENBERG MODEL
HYDROGEN
HYDROGEN ISOTOPES
INTERSTITIALS
ION PAIRS
ISOTOPE EFFECTS
ISOTOPE SEPARATION
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MECHANICS
METALS
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
PERMEABILITY
POINT DEFECTS
QUANTUM MECHANICS
RADIOISOTOPES
SEPARATION PROCESSES
TIME DEPENDENCE
TRANSITION ELEMENTS
TRITIUM
YEARS LIVING RADIOISOTOPES
360104* -- Metals & Alloys-- Physical Properties
657002 -- Theoretical & Mathematical Physics-- Classical & Quantum Mechanics
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BOSONS
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL MODELS
CRYSTAL STRUCTURE
DIFFUSION
ELECTRONIC STRUCTURE
ELEMENTS
FERMIONS
HEISENBERG MODEL
HYDROGEN
HYDROGEN ISOTOPES
INTERSTITIALS
ION PAIRS
ISOTOPE EFFECTS
ISOTOPE SEPARATION
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MECHANICS
METALS
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
PERMEABILITY
POINT DEFECTS
QUANTUM MECHANICS
RADIOISOTOPES
SEPARATION PROCESSES
TIME DEPENDENCE
TRANSITION ELEMENTS
TRITIUM
YEARS LIVING RADIOISOTOPES