Simultaneous Measurement of Pole Figures by X‐Ray DiffractionUsing a 2Ɵ‐Position Sensitive Detector

Abstract

Pole figure measurement is usually carried out with texture goniometers equipped with a single detector. Thereby defocalization due to the sample tilt is taken into account by using broad enough receiving slits possibly with a defocalization correction. This method does not work in line‐rich diffraction spectra with profuse peak overlap, particularly at high tilt angles. In this case the whole diffraction spectrum is needed for each pole figure point {α/β}. The integrated intensities are then to be obtained by a deconvolution procedure. Because of the necessary measuring time this is virtually impossible with a single detector. Using a position sensitive detector complete diffraction spectra can, however, be obtained for each pole figure point in reasonable times. In the present case, a 7 º linear position sensitive detector was used. The line broadening as a function of the tilt angle was measured, coordinate transformation formulae for the back‐reflexion case are given and it was shown that the so obtained results exhibit smaller experimental errors than the conventional single dctector measurements.