“…This result is in qualitative agreement with what reported by Hoelzer and Ebrahimi in [46], where iron alloys containing nickel were irradiated at 288°C to a fluence of 4.63 Á 10 23 n m À2 ($0.05 dpa) and showed an increase in the relative fraction of loops with ½h1 1 1i Burgers vector, while the reported number density for Fe-0.7Ni was 6.5 Á 10 21 m À3 , i.e. higher than in the Fe-C model alloy irradiated in the REVE experiment under similar conditions [37]. Hoelzer and Ebrahimi ascribed this behaviour to the fact that Ni atoms interact strongly with SIA atoms but weakly with vacancies in a-iron [47], so the nickel-SIA interaction is expected to increase the vacancy annihilation rate and thus reduce the elimination of ½h1 1 1i loops.…”