PDBx/mmCIF
A Member of the wwPDB

Data Category diffrn_measurement

Browse:

General

Category name
diffrn_measurement
Required in PDB entries
no
Category group membership
diffrn_group
Used in current PDB entries
Yes, in about 0.07 % of entries

Category Relationship Diagrams

70
View full category relationship diagram including all dictionary data categories
70
View abbreviated category relationship diagram including only those categories used in current PDB entries.

Category Description 

    Data items in the DIFFRN_MEASUREMENT category record details
    about the device used to orient and/or position the crystal
    during data measurement and the manner in which the
    diffraction data were measured.

NeXus Mapping Details 

 

    _diffrn_measurement.diffrn_id DIFFRNID
    _diffrn_measurement.details DETAILS
    _diffrn_measurement.device DEVICE
    _diffrn_measurement.device_details DEVDETAILS
    _diffrn_measurement.device_type DEVTYPE
    _diffrn_measurement.id GONIOMETER
    _diffrn_measurement.method METHOD
    _diffrn_measurement.number_of_axes NUMBER
    _diffrn_measurement.sample_detector_distance DIST
    _diffrn_measurement.sample_detector_distance_derived DISTDERIVED
    _diffrn_measurement.sample_detector_voffset VOFST
    _diffrn_measurement.specimen_support SPECSPRT

    -->

    /entry:NXentry
      /CBF_scan_id="SCANID
      /CBF_diffrn_id="DIFFRNID"
      /instrument:NXinstrument
      /CBF_diffrn_measurement__GONIOMETER:NXgoniometer
        /details="DETAILS"
        /local_name="DEVICE"
        /description="DEVDETAILS"
        /type="DEVTYPE"
        /CBF_diffrn_measurement__method="METHOD"
          /number_of_axes=NUMBER
        /CBF_diffrn_measurement__specimen_support="SPECSPRT"
      /CBF_diffrn_detector__DETECTORNAME:NXdetector
        /distance=DIST
          @units="mm"
        /distance_derived=DISTDERIVED
        /CBF_diffrn_measurement__sample_detector_voffset=VOFST
          @units="mm"

Category Examples

2

View/hide Category Examples

Category Example1

View/Hide Category Example 
 
    _diffrn_measurement.diffrn_id          'd1'
    _diffrn_measurement.device             '3-circle camera'
    _diffrn_measurement.device_type        'Supper model X'
    _diffrn_measurement.device_details     'none'
    _diffrn_measurement.method             'omega scan'
    _diffrn_measurement.details
    ; 440 frames, 0.20 degrees, 150 sec, detector distance 12 cm,
      detector angle 22.5 degrees
    ;

Category Example2

View/Hide Category Example 
 
    _diffrn_measurement.diffrn_id       's1'
    _diffrn_measurement.device_type     'Philips PW1100/20 diffractometer'
    _diffrn_measurement.method          'theta/2theta (\q/2\q)'

Key Data Items

Category Data Items

View/hide item list