Okay, thanks to those who helped me out--I've found a definition:
"The metric symmetry is the symmetry of the crystal lattice without taking into account the arrangement of the atoms in the unit cell. In reciprocal space, this is equivalent to looking at the positions of the reflections without taking into account their relative intensities."
I think I would have called it "spot location symmetry" or "reflection position symmetry," or similar, but "metric symmetry" is simple and fine as well...
All the best,
Jacob Keller
*******************************************
Jacob Pearson Keller, PhD
Looger Lab/HHMI Janelia Research Campus
19700 Helix Dr, Ashburn, VA 20147
email: [log in to unmask]
*******************************************
|