Electrical conductivities of dense and porous alumina under reactor irradiation

B. Tsuchiya, T. Shikama, Shinji Nagata, K. Toh, M. Narui, M. Yamazaki

Research output: Contribution to journalConference articlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)1511-1514
Number of pages4
JournalJournal of Nuclear Materials
Volume329-333
Issue number1-3 PART B
DOIs
Publication statusPublished - 2004 Aug 1
EventProceedings of the 11th Conference on Fusion Research - Kyoto, Japan
Duration: 2003 Dec 72003 Dec 12

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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