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Fusion Science and Technology Volume 47, 2005 - Issue 4: Proceedings of the Sixteenth Topical Meeting on THE TECHNOLOGY OF FUSION ENERGY (Part 2)
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Technical Paper

Radiation Damage of Proton Conductive Ceramics Under 14 MeV Fast Neutron Irradiation

B. TsuchiyaInstitute for Materials Research, Tohoku University: 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan, and [email protected]
,
S. NagataInstitute for Materials Research, Tohoku University: 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan, and [email protected]
,
K. TohInstitute for Materials Research, Tohoku University: 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan, and [email protected]
,
T. ShikamaInstitute for Materials Research, Tohoku University: 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan, and [email protected]
,
M. YamauchiJapan Atomic Energy Research Institute, Tokai Research Establishment: Facility of Fast Neutron Source, Tokai-mura, Ibaraki 319-1195, Japan, and [email protected]
&
T. NishitaniJapan Atomic Energy Research Institute, Tokai Research Establishment: Facility of Fast Neutron Source, Tokai-mura, Ibaraki 319-1195, Japan, and [email protected]
Pages 891-894 | Published online: 07 Apr 2017
 
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Abstract

Radiation induced change in electrical conductivity of proton conductive ceramics (Yb-doped SrCeO3) have been investigated under 14 MeV fast neutrons in air at temperatures of 293 and 373 K. It was found that the electrical conductivity under neutron irradiation at 293 and 373 K gradually decreased with increased neutron fluence reaching a constant for neutron fluences above 2.0 × 1018 and 1.0 × 1017 n/m2, respectively. The decrease of the electrical conductivity may be associated with annihilation of sub-bands due to Ce4+ to Ce3+ conversion.

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