TY - JOUR
T1 - Electrical conductivity of alumina after heavy irradiation in a high-flux fission reactor
AU - Shikama, Tatsuo
AU - Zinkle, Steven J.
N1 - Funding Information:
In-situ irradiation tests in high-flux fission reactors are considered important to confirm the phenomenon and to understand the mechanism of the phenomenon. A collaborative experiment supported by the US Department of Energy and the Ministry of Education of Japan, called Temperature Regulated In-Situ Test of Electrical Resistivity (TRIST-ER), has been completed in the High-Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory in the USA. This experiment measured the in-situ electrical resistivity of 12 different grades of aluminium oxide (A1203) during neutron irradiation at 450-500°C (Zinkle et al. 1996, 1997b, !Shikama et al. 1998, Shikama and Zinkle 1998). Results indicated that there would not be a catastrophic increase in the electrical conductivity under a fast neutron
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2001/1
Y1 - 2001/1
N2 - 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).
AB - 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).
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U2 - 10.1080/13642810108216526
DO - 10.1080/13642810108216526
M3 - Article
AN - SCOPUS:0035241146
VL - 81
SP - 75
EP - 89
JO - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
JF - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
SN - 1364-2812
IS - 1
ER -