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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