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Item _diffrn_radiation.pdbx_analyzer

Description

 Indicates the method used to obtain monochromatic radiation.
  _diffrn_radiation.monochromator describes the primary beam
  monochromator (pre-specimen monochromation). 
  _diffrn_radiation.pdbx_analyzer specifies the
  post-diffraction analyser (post-specimen) monochromation.
  Note that monochromators may have either 'parallel' or
  'antiparallel' orientation. It is assumed that the
  geometry is parallel unless specified otherwise.
  In a parallel geometry, the position of the monochromator
  allows the incident beam and the final post-specimen
  and post-monochromator beam to be as close to parallel
  as possible. In a parallel geometry, the diffracting
  planes in the specimen and monochromator will be parallel
  when 2*theta(monochromator) is equal to 2*theta (specimen).
  For further discussion see R. Jenkins and R. Snyder,
  Introduction to X-ray Powder Diffraction, Wiley (1996),
  pp. 164-5.

Category

Item Examples

Example 1:

GE(111)

Example 2:

Zr filter

Example 3:

Ge 220

Example 4:

none

Example 5:

equatorial mounted graphite (0001)

Example 6:

Si (111), antiparallel

Mandatory Code

Data Type Code

Alias Names

 

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