Irradiations of vanadium and molybdenum were performed at liquid-hydrogen temperature with various fluences of fission neutrons. The results of the high-dose irradiation served to calculate the spontaneous recombination volumes of the two metals: α = 55 at. vol., α = 690 at. vol. when using the model of Lück and Sizmann, and α = 210 at. vol., α = 810 at. vol. when applying that of Balarin and Hauser. The large differences between the recombination volumes for the two b.c.c. metals are an argument against a simple lattice-structure dependence of αr. The decisive role of ϱF, the electrical resistivity of a Frenkel pair, is discussed in detail. The recovery spectra of both, V and Mo, were determined between 24 and 440 °K, with the radiation-induced defect concentration as parameter. A tentative interpretation of the various annealing stages is given.
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Vajda et al. (1974) studied this question.
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