Powder dictionary (pdCIF) version 1.0.1

_pd_instr_divg_eq_

Names:
'_pd_instr_divg_eq_src/mono' '_pd_instr_divg_eq_mono/spec' '_pd_instr_divg_eq_src/spec' '_pd_instr_divg_eq_spec/anal' '_pd_instr_divg_eq_anal/detc' '_pd_instr_divg_eq_spec/detc'

Definition:

   Describes collimation in the equatorial plane (the plane
   containing the incident and diffracted beams) for
   the instrument. Values are the maximum divergence angles in
   degrees, as limited by slits or beamline optics
   other than Soller slits (see _pd_instr_soller_eq_):
     *_src/mono, collimation between the radiation source
         and the monochromator;
     *_mono/spec, collimation between the monochromator and
         the specimen;
     *_src/spec, collimation between the radiation source
         and the specimen;
     *_spec/anal, collimation between the specimen and the
         analyser;
     *_anal/detc, collimation between the analyser and the
         detector;
     *_spec/detc, collimation between the specimen and the
         detector.

   Note that *_src/spec is used in place of *_src/mono and 
   *_mono/spec if there is no monochromator in use, and 
   *_spec/detc is used in place of *_spec/anal and *_anal/detc 
   if there is no analyser in use.

May appear in list
The permitted range is 0.0 -> infinity

Type: numb

Category: pd_instr

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