Powder dictionary (pdCIF) version 1.0.1
_pd_instr_beam_size_
Names:'_pd_instr_beam_size_ax' '_pd_instr_beam_size_eq'
Definition:
Axial and equatorial dimensions of the radiation beam at the specimen position (in millimetres). The perpendicular to the plane containing the incident and scattered beam is the axial (*_ax) direction.
The permitted range is 0.0 -> infinity
Type: numb
Category: pd_data