Measurement of Uptake and Release of Tritium by Tungsten

M. Nakayama; Y. Torikai; M. Saito; R.-D. Penzhorn; K. Isobe; T. Yamanishi; H. Kurishita

doi:dx.doi.org/10.13182/FST14-T65

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Home / Publications / Journals / Fusion Science and Technology / Volume 67 / Number 3

Measurement of Uptake and Release of Tritium by Tungsten

M. Nakayama, Y. Torikai, M. Saito, R.-D. Penzhorn, K. Isobe, T. Yamanishi, H. Kurishita

Fusion Science and Technology / Volume 67 / Number 3 / April 2015 / Pages 503-506

Proceedings of TRITIUM 2013 / dx.doi.org/10.13182/FST14-T65

First Online Publication:March 6, 2015

Updated:April 2, 2015

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The uptake of tritium by tungsten and its release behavior have been investigated. Specimens annealed at 773 K, 873 K, 973 K, 1,073 K and 1,173 K for 3 hours and loaded with tritium at 773 K for 3 hours accumulated 0.125 ppm, 0.068 ppm, 0.067 ppm, 0.038 ppm and 0.033 ppm, respectively (tritium solubilities were 3.6x 10^-9 at.fr.Pa^-1/2, 2.0x 10^-9 at.fr.Pa^-1/2, 1.9x 10^-9 at.fr.Pa^-1/2, 1.1x 10^-9 at.fr.Pa^-12/ and 9.7x 10^-10 at.fr.Pa^-1/2, respectively). The difference is attributed to the existence of trapping sites or oxide films.