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Effects of Gamma Irradiation on Silicon Carbide Semiconductor Radiation Detectors

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2 Author(s)
Ruddy, F.H. ; Dept. of Sci. & Technol., Westinghouse Electr. Co., Pittsburgh, PA ; Siedel, J.G.

Silicon carbide (SiC) semiconductor radiation detectors are being developed for alpha-particle, X- and gamma-ray, and fast-neutron energy spectrometry. SiC detectors have been operated at temperatures up to 306degC and have also been found to be highly resistant to the radiation effects of fast-neutron and charged-particle bombardments. In the present work, the alpha-particle response of a SiC detector based on a Schottky diode design has been monitored as a function of 137Cs gamma-ray exposure. The changes in response have been found to be negligible for gamma-ray exposures up to and including 22.7 MGy, and irradiations to higher doses are in progress. Results will be reported for alpha and fast-neutron response testing following cumulative doses up to 22.7 MGy.

Published in:

Nuclear Science Symposium Conference Record, 2006. IEEE  (Volume:1 )

Date of Conference:

Oct. 29 2006-Nov. 1 2006