Distortion Correction in Anomalous Absorption Coefficients

Based on a recent theory of X‐ray diffraction by a distorted crystal completed by the present author, the temperature and distortion corrections in anomalous absorption coefficients have been studied in the case of a single symmetric Bragg reflection in transmission (symmetrical Laue case). If the distribution of atomic displacements is given, then the anomalous absorption coefficient has a distortion correction of the same form as the Debye‐Waller factor in terms of the second moment of the distribution. If the displacement of atoms in a distorted crystal is replaced by a proper time‐average value of the thermal motion of atoms, then the temperature correction in the absorption coefficient is given by the Debye‐Waller factor multiplied by the structure factor.