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![[Figure 1]](nb5383fig1mag.jpg)
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Figure 1
Standard spot patterns for the body-centered cubic lattice showing type I and type II patterns (patterns are not drawn to scale). The patterns of type I in (a) and (b) are characterized by a 90° angle between the shortest A and the second-shortest reciprocal-lattice vector B. The angle between the third-shortest reciprocal-lattice vector C and vector A can range from 45° for the [001] direction (a) to 77.96° for the [233] direction (b). The patterns of type II in (c) and (d) always possess two identical angles, i.e. ∠A–B = ∠A–C. The angles in type II patterns can range from 60° for the [111] direction in (c) to 77.08° for the [133] direction in (d). |
![[Figure 1]](nb5383fig1.jpg)
 | JOURNAL OF APPLIED CRYSTALLOGRAPHY |
ISSN: 1600-5767
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