Abstract

AbstractLattice parameter and residual resistivity measurements were performed on high‐purity copper samples irradiated simultaneously with 2.6 MeV electrons at 6 K up to defect concentrations of about 0.1%. Lattice parameter changes could be measured with a resolution of Δa/a = 5 × 10−6. In six irradiations the ration η = (Δa/a)/Δϱ was determined as a function of defect concentration and thermal recovery. During defect production the ratio η amounts to (1.75 ± 0.10) × 103 (Ωcm)−1 and is independent of the defect concentration. Furthermore, the ratio η stays constant throughout the recovery stages I, II, and III.

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