Measurement volume considerations in X-ray microdiffraction stress analysis

The Lorenz-polarization (LP) factor, which is used for X-ray intensity calculations from polycrystalline materials, contains a term that describes the fraction of diffracting grains in the irradiated sample volume. We present extensions of this term and a series of experiments that tests its applicability. The implications of the analysis on microbeam diffraction are also discussed. © 2004 International Centre for Diffraction Data.