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Abstract

A time-dependent gas-phase isovolumetric desorption technique has been used to obtain the hydrogen isotopes transport parameters for the range of temperatures from 423 to 892 K and driving pressures ranging from 4E4 to 1E5 Pa. For protium and deuterium the properties diffusivity (D), Sieverts' constant (Ks), permeability (Phi), trapping energy (Et) and trap sites concentration (Nt) are given. The dynamics of the hydrogen isotopes transport and the origin of the trapping phenomenon are discussed in connection with the OPTIFER-IVb microstructure.

Additional information

Authors: ESTEBAN G, European Commission, Joint Research Centre, Environment Institute, T.P. 680, 21020 Ispra (IT);PERUJO A, European Commission, Joint Research Centre, Environment Institute, T.P. 680, 21020 Ispra (IT);DOUGLAS K, European Commission, Joint Research Centre, Environment Institute, T.P. 680, 21020 Ispra (IT);SEDANO L, European Commission, Joint Research Centre, Environment Institute, T.P. 680, 21020 Ispra (IT)
Bibliographic Reference: Article:Journal of Nuclear Materials, 281 (2000), pp. 34-41
Record Number: 200013035 / Last updated on: 2001-01-24
Category: PUBLICATION
Original language: en
Available languages: en