Data Item _pdbx_serial_crystallography_measurement.focal_spot_size

General

Item name
_pdbx_serial_crystallography_measurement.focal_spot_size
Category name
pdbx_serial_crystallography_measurement
Attribute name
focal_spot_size
Required in PDB entries
no
Used in current PDB entries
Yes, in about 0.03 % of entries

Item Description

The focal spot size of the beam impinging on the sample (micrometres squared).

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]+)?
Units
micrometres_squared

Allowed Boundary Conditions

Minimum Value Maximum Value
0.0

+∞