Powder dictionary (pdCIF) version 1.0.1




   The calibration function for converting a channel number
   supplied in _pd_meas_detector_id for a position-sensitive
   or energy-dispersive detector or the distance supplied in
   _pd_meas_position to Q, energy, angle etc.
   Use _pd_calib_std_external_ to define a pointer
   to the file or data block containing the information used
   to define this function.


; 2\q~actual~ = 2\q~setting~ + arctan(
             cos(P~1~) / {1/[P~0~ (CC - CH~0~ - P~2~ CC^2^)] - sin(P~1~)} )

Type: char

Category: pd_calibration

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