Crystallographic Information Framework

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Index

Macromolecular dictionary (mmCIF) version 2.0.09

Category DIFFRN_RADIATION

Name:
'diffrn_radiation'

Description:

   Data items in the DIFFRN_RADIATION category describe
   the radiation used in measuring the diffraction intensities,
   its collimation and monochromatization before the sample.

   Post-sample treatment of the beam is described by data
   items in the DIFFRN_DETECTOR category.

Examples:

Example 1 - based on PDB entry 5HVP and laboratory records for the structure corresponding to PDB entry 5HVP. 
 
    _diffrn_radiation.diffrn_id          'set1'

    _diffrn_radiation.collimation        '0.3 mm double pinhole'
    _diffrn_radiation.monochromator      'graphite'
    _diffrn_radiation.type               'Cu K\a'
    _diffrn_radiation.wavelength_id       1


Example 2 - based on data set TOZ of Willis, Beckwith & Tozer [Acta Cryst. (1991), C47, 2276-2277]. 
 
    _diffrn_radiation.wavelength_id    1
    _diffrn_radiation.type             'Cu K\a'
    _diffrn_radiation.monochromator    'graphite'


Category groups:
    inclusive_group
    diffrn_group
Category key:
    _diffrn_radiation.diffrn_id

Mandatory category: no


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.