THE ELECTRICAL RESISTIVITY AND ITS TEMPERATURE COEFFICIENT FOR IRRADIATED GRAPHITE

Author: Eggen, D. T.
Published: United States : [publisher not identified], 1950.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1950.
Physical Description: microopaque : positive ; 8 x 13 cm
Additional Creators: Stello, P.

Availability

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Summary

The temperature coefficient of electrical resistance was measured on various types of artificial graphite irradiated in a Hanford reactor and the Los Alamos plutonium reactor. This coefficient had a minimum value, as was predicted theoretically, at a neutron exposure of about 3to 4 x 1O/sup 17/ n/cm/sup 2/ in the Los Alamos reactor. Increasing neutron exposures increased the temperature coefficient, which started to saturate at Hanford exposures of about 200 Mwd/ct. This increase due to irradiation annealed out under heat treatment to 2000 deg C. There was little difference in the coefficient between different types of graphites at equal exposure. Electrical resistance as a function of exposure in the Los Alamos and Hanford reactors was also measured. These data confirmed those previously reported, showing significant differences between the various graphite types. (auth)

Report Numbers

NAA-SR-54(Del.)

Other Subject(s)

Collection

U.S. Atomic Energy Commission depository collection.

Note

NSA number: NSA-15-017301
OSTI Identifier 4023205
Research organization: North American Aviation, Inc., Los Angeles.

View MARC record | catkey: 41322826