Crystallographic Information Framework

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Powder dictionary (pdCIF) version 1.0.1

_pd_spec_size_

Names:
'_pd_spec_size_axial' '_pd_spec_size_equat' '_pd_spec_size_thick'

Definition:

   The size of the specimen in three mutually perpendicular
   directions in millimetres.
   The perpendicular to the plane containing the incident
   and scattered beam is the *_axial direction.
   In transmission geometry, the scattering vector is parallel
   to *_equat and in reflection geometry the scattering vector is
   parallel to *_thick.


The permitted range is 0.0 -> infinity

Type: numb

Category: pd_spec


International Tables for Crystallography

Volume G: Definition and exchange of crystallographic data

First online edition (2006)

Edited by S. R. Hall and B. McMahon

An essential guide and reference to CIF for programmers, data managers handling crystal-structure information and practising crystallographers.