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Figure 17
Propagation of wavefields in a crystal. Left: reciprocal space. : normal to the crystal surface; P1, P2: tiepoints of the two waves excited in the crystal; , : Poynting vectors. Right: Borrmann fan in direct space. After Borrmann (1959a ). |


journal menu![[Figure 17]](wx0006fig17.jpg)
: normal to the crystal surface;
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: Poynting vectors. Right: Borrmann fan in direct space. After Borrmann (1959



