Crystallographic Information Framework

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Powder dictionary (pdCIF) version 1.0.1


'_pd_meas_counts_total' '_pd_meas_counts_background' '_pd_meas_counts_container' '_pd_meas_counts_monitor'


   Counts measured at the measurement point as a function of
   angle, time, channel or some other variable (see
   _pd_meas_2theta_ etc.).

   The defined fields are:
     _pd_meas_counts_total, scattering from the specimen
       (with background, specimen mounting or container
       scattering included);
     _pd_meas_counts_background, scattering measured
       without a specimen, specimen mounting etc., often
       referred to as the instrument background;
     _pd_meas_counts_container, the specimen container or
       mounting without a specimen, includes background;
     _pd_meas_counts_monitor, counts measured by an 
       incident-beam monitor to calibrate the flux on the 

   Corrections for background, detector dead time etc.
   should not have been made to these values. Instead use
   _pd_proc_intensity_ for corrected diffractograms.

   Note that counts-per-second values should be converted to
   total counts. If the counting time varies for different
   points, it may be included in the loop using

   Standard uncertainties should not be quoted for these values.
   If the standard uncertainties differ from the square root of
   the number of counts, _pd_meas_intensity_ should be used.

Appears in list
The permitted range is 0 -> infinity

Type: numb

Category: pd_data