Self-diffusion in Beta Uranium
Self-diffusion in Beta Uranium

Author:

Publisher:

Published: 1960

Total Pages: 44

ISBN-13:

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The self-diffusion coefficient of uranium decreased from 3 x 10−9 cm sq./sec. at 785 deg C (gamma phase) to 2.1 x 10−11/ cm sq./sec. at 760 deg C (beta phase), dropping by a factor of one hundred and fifty on crossing from the gamma into the beta phase. Even at temperatures high in the beta phase, the plots of log C vs. X2 are curved, indicating that self-diffusion in beta U does not take place by isotropic volume diffusion alone.

Self-diffusion in Gamma Uranium
Self-diffusion in Gamma Uranium

Author: S. J. Rothman

Publisher:

Published: 1959

Total Pages: 44

ISBN-13:

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The self-diffusion coefficient or uranium was measured at four temperatures in the gamma phase. The data are fitted by an Arrhenius-type equation D = 2.33 x well with previously reported results. The value of D/sub o/ is lower than that predicted by Zener's theory, and the activation energy is much less than the value expected from various empirical correlations.

Physical Chemistry
Physical Chemistry

Author: Robert G. Mortimer

Publisher: Academic Press

Published: 2008-05-29

Total Pages: 1415

ISBN-13: 0080878598

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In this third edition, core applications have been added along with more recent developments in the theories of chemical reaction kinetics and molecular quantum mechanics, as well as in the experimental study of extremely rapid chemical reactions.* Fully revised concise edition covering recent developments in the field* Supports student learning with step by step explanation of fundamental principles, an appropriate level of math rigor, and pedagogical tools to aid comprehension* Encourages readers to apply theory in practical situations