Particle statistics of a capillary specimen in synchrotron powder diffractometry

Particle statistics in synchrotron powder diffractometry measured in a capillary transmission mode have been theoretically and experimentally investigated. General mathematical formulae for statistical analysis of observed intensities measured by a spinner-scan method are derived. It is shown that an additional parameter to characterize the size distribution of crystallites can be evaluated from the skewness of the distribution of measured diffraction intensities obtained by the spinner-scan method applied to capillary specimens.