Electrical conductivity of alumina after heavy irradiation in a high-flux fission reactor

Tatsuo Shikama, Steven J. Zinkle

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The electrical conductivities of seven different alumina specimens were measured after they were irradiated in the High-Flux Isotope Reactor (HFIR), Oak Ridge National Laboratory. Results indicated a moderate increase in the electrical conductivity due to the irradiation in HFIR up to 2.8 displacements per atom at 450–500°C. A large offset current was observed in the irradiated specimens after they were subjected to an applied voltage, which indicated the existence of a large number of trapped electrical charges. An abrupt release of the trapped electrical charges may be a trigger to cause the previously reported electrical breakdown under irradiation (called radiation-induced electrical degradation).

Original languageEnglish
Pages (from-to)75-89
Number of pages15
JournalPhilosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume81
Issue number1
DOIs
Publication statusPublished - 2001 Jan

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physics and Astronomy(all)

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