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Effective Valence of Tritium in the Alpha Phase of Niobium

Ken-ichi Hashizume, Katsuhiko Fujii, Masayasu Sugisaki

Fusion Science and Technology / Volume 28 / Number 3P2 / October 1995 / Pages 1179-1181

Tritium Properties and Interaction with Material / Proceedings of the Fifth Topical Meeting on Tritium Technology In Fission, Fusion, and Isotopic Applications Belgirate, Italy May 28-June 3, 1995 / dx.doi.org/10.13182/FST95-A30568

The effective valence Z* of tritium and protium dissolved in niobium was measured by a steady-state electromigration experiment in a temperature region from 379 K to 521 K. A new experimental technique using an isotope mixture of tritium and protium was adopted to discriminate a comparatively small mass dependence of effective valence. The trend Z*(T)>Z*(H) of isotope dependence was confirmed.