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Figure 2
Skew-symmetric triple Laue interferometer with split crystals I and II (top view). The components are labelled as follows: S splitter, M1 and M2 mirrors, A analyser. Orange and blue rays indicate arms 1 and 2, respectively. The rays forward transmitted by the two mirrors have been omitted. The x axis is orthogonal to the diffracting planes. ΘB is the Bragg angle and [\exp({\rm i} {\bf K}_{o} \cdot {\bf r})] is the [\specialfonts {\frak p}] = 0 rad m−1 mode of the incoming single-particle wavefunction. ρ (mutual pitch angle) and θ (mutual yaw angle) are rotation angles about the z and y axes, respectively. The y axis points up.

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