(IUCr) CIF Definition save__diffrn_radiation.polarisn_ratio

DRAFT DICTIONARY CBF/imgCIF Extensions Dictionary | Draft version 1.5 for comment

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Index

##### Image dictionary (imgCIF) version 1.5.4

# _diffrn_radiation.polarisn_ratio

Name:
`'_diffrn_radiation.polarisn_ratio'`

Definition:

            Polarization ratio of the diffraction beam incident on the
                   crystal. This is the ratio of the perpendicularly polarized to
                   the parallel polarized component of the radiation. The
                   perpendicular component forms an angle of
                   _diffrn_radiation.polarisn_norm to the normal to the
                   diffraction plane of the sample (i.e. the plane containing
                   the incident and reflected beams).

Type: float

Mandatory item: no

Alias:
`_diffrn_radiation_polarisn_ratio` (cif_core.dic version 2.0.1)
The permitted range is [0.0, infinity)

Category: diffrn_radiation

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Copyright © 2005 International Union of Crystallography