Measurements have been made of the changes in the electrical resistance of artificial graphite which is induced by neutron irradiation and subsequent annealing. The resistivity increases with irradiation; the increase in resistance is partially removed by annealing at 128° C. These changes have been interpreted using Wallace's theory of the electron structure of graphite. The number of atoms displaced by the irradiation has been calculated using the method of Seitz, and is shown to be consistent with the experimental results.
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