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Deuterium retention in rhenium-doped tungsten

Funded under: FP7-EURATOM

Abstract

Deuterium retention in rhenium doped tungsten (W-Re) was investigated by means of the thermodesorption technique. W-Re alloys of different structures and concentrations of Re were investigated. All tungsten rhenium alloys had a common structural feature - micron size voids in the bulk. The samples were irradiated by 200 eV deuterium ions in the fluence range 10{22}-10{24} D/m{2}. The thermodesorption spectra of polycrystalline W measured with a linear ramp of 5 K/s has two peaks at ~450 and 650 K. In TDS of W-Re alloys an additional high-temperature peak was found at 850 K. The observed retention in W-Re alloys depends strongly on materials structure. In the range of 1-10%Re admixture the Re concentration in W-Re alloy does not influence noticeably the deuterium retention. Structure changes (filling of voids in material) was found to take place both at annealing and low-energy deuterium irradiation.

Additional information

Authors: GOLUBEVA A V, Moscow Engineering and Physics Institute, Moscow (RU);KURNAEV V A, Moscow Engineering and Physics Institute, Moscow (RU);MAYER M, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);ROTH J, Max-Planck-Institut für Plasmaphysik, IPP-EURATOM Association, Garching (DE);OGORODNIKOVA O V, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: An article published in: Journal of Nuclear Materials, Volumes 363-365 (2007), pp. 893-897
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/doi:10.1016/j.jnucmat.2007.01.110
Record Number: 200719342 / Last updated on: 2007-09-06
Category: PUBLICATION
Original language: en
Available languages: en