Ratio of Permeabilities of Tritium to Protium through Palladium-Alloy Membrane

Haruyuki FUJITA; Sakae OKADA; Kunio FUJITA; Hiroshi SAKAMOTO; Kunio HIGASHI; Tomonori HYODO

doi:10.3327/jnst.17.436

Haruyuki FUJITA, Sakae OKADA, Kunio FUJITA, Hiroshi SAKAMOTO, Kunio HIGASHI, Tomonori HYODO

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Keywords: tritium, protium, permeability, palladium-alloy membrane, Siverts law, separation factor, sorption, diffusion, flow-pattern effect, liquid scintillation counter, high temperature, medium pressure

JOURNAL FREE ACCESS

1980 Volume 17 Issue 6 Pages 436-442

DOI https://doi.org/10.3327/jnst.17.436

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Abstract

Experiments were performed to study the ratio of permeabilities of protium to tritium through Pd-Ag-Au alloy at the conditions of 350°C ?? T ?? 550°C and p<1, 000 mmHg.
The observed ratio was 2.12±0.03 at 350°C, and it was almost independent of temperature. It is remarkable that the obtained ratio of permeabilities is considerably larger than the square root of the atomic weight ratio √3.
The dependence of separation factor for the hydrogen isotopes on pressure and "cut" is also discussed.

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