Conductivity of fission-damaged uranium nitride

Conductivity of fission-damaged uranium nitride (UN) irradiated at a fission rate of 3 × 10 18 fissions / m 3 s at a self-heating temperature of 370 K was studied and kinetics parameters for holes and electrons on the basis of a two-band conduction model were obtained. According to this model the ho...

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Bibliographic Details
Published in:Journal of nuclear materials 1995-02, Vol.218 (2), p.268-272
Main Authors: Surin, V.I., Evstyuhin, N.A., Cheburkov, V.I.
Format: Article
Language:English
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Summary:Conductivity of fission-damaged uranium nitride (UN) irradiated at a fission rate of 3 × 10 18 fissions / m 3 s at a self-heating temperature of 370 K was studied and kinetics parameters for holes and electrons on the basis of a two-band conduction model were obtained. According to this model the holes are carriers together with the electrons in uranium nitride and the electrical properties have been defined as the ratio of their concentrations. The hole conductivity which is dominant decreases gradually with increasing dose and falls considerably at 10 24 fissions/m 3 to 2 × 10 4 ω −1 m −1. However, changes of conduction mechanism are not observed owing to high hole mobility of the order of 10 −4 m 2/Vs.
ISSN:0022-3115
1873-4820
DOI:10.1016/0022-3115(94)00652-0