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Modeling of diffusion and absorption processes of tritium in beryllium membranes

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Abstract

The permeation of tritium produced in thermonuclear fusion through metallic membranes, which is a topical problem in radiation physics, is addressed. A physical model for the permeation of hydrogen through a beryllium membrane is proposed which takes into account the oxide layer on the surface of the membrane. The model is implemented in the form of a system of differential equations, which is solved by numerical methods. As a result of the computer modeling it is shown that as the temperature is raised, the oxide layer in a certain interval blocks the permeation of tritium in the membrane, and it is found that the tritium is distributed in a rather limited region of the membrane over its thickness. This circumstance will permit the use of special processing by etching or mechanical treatment.

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Authors and Affiliations

  1. Tver State Technical University, 170026, Tver, Russia

    V. V. Kirsanov & V. V. Grigor’eva

Authors
  1. V. V. Kirsanov
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  2. V. V. Grigor’eva
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Zh. Tekh. Fiz. 69, 38–41 (July 1999)

Deceased

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Kirsanov, V.V., Grigor’eva, V.V. Modeling of diffusion and absorption processes of tritium in beryllium membranes. Tech. Phys. 44, 771–774 (1999). https://doi.org/10.1134/1.1259345

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  • DOI: https://doi.org/10.1134/1.1259345

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