Abstract
Abstract The effects of neutron irradiation on the critical current density J c of vanadium single crystals have been studied. It is shown that the radiation enhances J c up to a fluence of about 4 × 10 18 n/cm 2 . The value of the difference in J c 2 before and after irradiation divided by J c 2 before irradiation, [ J c (A.I.) 2 − J c (B.I.) 2 ]/ J c (B.I.) 2 , increases in proportion to the neutron fluence, which is tentatively explained by a model in which J c depends on the interaction between flexible flux lines and randomly distributed pinning centers.
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