Radiation induced conductivity of ceramic insulators measured in a fission reactor

Tatsuo Shikama, Minoru Narui, Yasuichi Endo, Tsutomu Sagawa, Hideo Kayano

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)


In-reactor measurements of the long-term change in the electrical conductivity of α-alumina were carried out in the JMTR fission reactor. Special attention was focussed on the effect of applied voltage on electrical degradation. Two experiments were carried out for 96 and 48 reactor full power days at 600–630 K and 770–800 K, with an applied electric field of 500 V/m AC and 500 kV/m DC, respectively. A long-term increase in electrical conductivity was observed, which is thought to be radiation induced electrical degradation, RIED.

Original languageEnglish
Pages (from-to)575-578
Number of pages4
JournalJournal of Nuclear Materials
Publication statusPublished - 1992 Jan 1

ASJC Scopus subject areas

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


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