Data Item _diffrn_radiation.polarisn_ratio
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General 
- Item name
- _diffrn_radiation.polarisn_ratio
- Category name
- diffrn_radiation
- Attribute name
- polarisn_ratio
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
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).
Data Type 
- Data type code
- float
- Data type detail
- float item types are the subset of numbers that are the floating point numbers.
- Primitive data type code
- numb
- Regular expression
- -?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?
Allowed Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| 0.0 | +∞ |
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _diffrn_radiation_polarisn_ratio | cif_core.dic | 2.0.1 |