Note from Bob von Dreele on POLA

Typically iparm files will have "incorrect" POLA values. You might suggest "good" values for graphite monochromators.

• Thus while calculated values can be determined, experimentally determined values may be recommended. Not only for laboratory systems, but also synchrotron data where ideal values might be assumed.

  • In this case using cubic annealed Y2O3 (10.6Å - IA3)

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