Radiation induced changes of electrical conductivity for alumina varying density were investigated during fission reactor irradiation. Radiation induced conductivity (RIC) for dense and porous alumina increased due to electronic excitation with increasing the reactor power. The RIC at the reactor full power of 50 MW with ionization dose rate of 2.3 kGy/s and fast neutron flux of 1.4-1.6×1017 n/m2s was higher by about two orders of magnitude than base conductivities at 0 MW. The RIC for porous alumina was about 3.3 times as much as that for dense alumina. The RIC of dense and porous alumina at 50 MW decreased at the initial fluence and reached a constant at fast neutron fluences of about 5.5×1022 and 2.5×10 22 n/m2, respectively and subsequently kept up to the resultant ionization dose of 4.4×103 MGy and the fast neutron fluence of about 2.9×1023 n/m2.
|ジャーナル||Journal of Nuclear Materials|
|号||1-3 PART B|
|出版ステータス||Published - 2004 8月 1|
|イベント||Proceedings of the 11th Conference on Fusion Research - Kyoto, Japan|
継続期間: 2003 12月 7 → 2003 12月 12
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