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Abstract
The configuration and motion of a climbing dislocation link is calculated by considering the balance between the mechanical, line tension, and viscous drag forces. The contribution of this climb to anelastic creep is calculated and the effect of stress changes during creep is estimated for a single value of link size and a distribution of sizes. Experimental results obtained with uranium dioxide are presented which are in good agreement with the predicted behaviour. The analysis enables an estimate to be made of the variation in link-length sizes.