Powder dictionary (pdCIF) version 1.0.1

_pd_instr_soller_ax_

Names:
'_pd_instr_soller_ax_src/mono' '_pd_instr_soller_ax_mono/spec' '_pd_instr_soller_ax_src/spec' '_pd_instr_soller_ax_spec/anal' '_pd_instr_soller_ax_anal/detc' '_pd_instr_soller_ax_spec/detc'

Definition:

   Describes collimation in the axial direction
   (perpendicular to the plane containing the incident
   and diffracted beams) for the instrument.
   Values are the maximum divergence angles in
   degrees, as limited by Soller slits located thus:
     *_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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