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<p><a href="page.php?w=X-ray_crystallography">reflections</a>" and "satellite reflections". Main reflections are usually stronger in intensity and span a lattice defined by three-dimensional <a href="page.php?w=reciprocal_lattice">reciprocal lattice</a> vectors. Satellite reflections are weaker in intensity and are known as "lattice ghosts". These reflections do not correspond to any <a href="page.php?w=lattice_points">lattice points</a> in physical space and cannot be indexed with the original three vectors. </p>

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