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 current 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 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 |