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Expressions are obtained for sink strength and preference of dislocation multipole and dislocation wail both, in the absence and presence of size elastic interaction of radiation point defects with dislocations. The multipole and the wall are shown to absorb preferentially interstitials than vacancies. Multipole preference, irrespective the number of composing dislocations, may be both greater and smaller than isolated dislocation preference depending on the type of dislocations and geometry of their position in the multipoie. Dislocation wall preference is much smaller than isolated dislocation preference.

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