- #1

unscientific

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[tex]S_{(hkl)} = \left[1 + e^{i\pi(h+k)} + e^{i\pi(l+k)} + e^{i\pi(h+l)} \right] \left[ 1+e^{i\frac{\pi}{2}(h+k+l)} \right][/tex]

which should be zero for (222) plane. But measuring it carefully reveals a non-zero intensity. Why is this the case?