Definition:
The maximum, medial and minimum dimensions in millimetres of the crystal. If the crystal is a sphere, then the *_rad item is its radius. If the crystal is a cylinder, then the *_rad item is its radius and the *_length item is its length. These may appear in a list with _exptl_crystal_id if multiple crystals are used in the experiment.
May appear in list containing _exptl_crystal_id
The permitted range is 0.0 -> infinity
Type: numb
Category: exptl_crystal
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