Prank-Read source

As mentioned above in the context of the Prank-Read source, dislocations can also be annihilated. A simple example are two opposite edge dislocations moving on the same slip plane. As explained in section 6.2.7, the superposition of their stress fields causes an attraction. If they approach, the additional upper and lower half planes can unite and form a complete plane, causing the dislocations to vanish. 

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