Figure 4.52 shows a series of diffraction patterns acquired from an aluminium grain which contains a single dislocation. After recording the first pattern (SAD1) the three diffraction patterns a...

Figure 4.52 shows a series of diffraction patterns acquired from an aluminium grain which contains a single dislocation. After recording the first pattern (SAD1) the

three diffraction patterns a reflection used to form a two-beam image is indicated for which the dislocation contrast was absent.

(a) Solve all three diffraction patterns.

 (b) Determine the Burgers vector of the dislocation. What reasonable conclusion can you reach about the line sense of this dislocation?