* Do not forget to make clear drawings.

Exercise 10 When point defects cluster in a matrix they do so in a particular way. a) Explain why defects cluster, generally speaking. b) Make clear drawings of how self-interstitals should collect into clusters of size two and three (diand tri-interstitials) in the bcc lattice and in the fcc lattice. Motivate the configurations. c) Explain how vacancies are likely to cluster