Data Category diffrn_measurement

General

Category name
diffrn_measurement
Required in PDB entries
no
Category group membership
diffrn_group
Used in current PDB entries
Yes, in about 0.08 % 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_voffset VOFST
    _diffrn_measurement.specimen_support SPECSPRT
   
    -->
   
    /CBF_diffrn_scan__SCANID: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"
        /CBF_diffrn_measurement__sample_detector_voffset=VOFST
          @units="mm"

Category Examples

2

 
    _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
    ;
 
    _diffrn_measurement.diffrn_id       's1'
    _diffrn_measurement.device_type     'Philips PW1100/20 diffractometer'
    _diffrn_measurement.method          'theta/2theta (\q/2\q)'