Powder dictionary (pdCIF) version 1.0.1

_pd_instr_dist_

Names:
'_pd_instr_dist_src/mono' '_pd_instr_dist_mono/spec' '_pd_instr_dist_src/spec' '_pd_instr_dist_spec/anal' '_pd_instr_dist_anal/detc' '_pd_instr_dist_spec/detc'

Definition:

   Specifies distances in millimetres for the instrument geometry:
     *_src/mono, the distance from the radiation source
         to the monochromator;
     *_mono/spec, the distance from the monochromator to
         the specimen;
     *_src/spec, the distance from the radiation source
         to the specimen;
     *_spec/anal, the distance from the specimen to the
         analyser;
     *_anal/detc, the distance from the analyser to the
         detector;
     *_spec/detc, the distance from the specimen to 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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