title: Simple statistics for intensity data from twinned specimens.
abstract: The statistics of intensity data from hemihedrally twinned specimens are analyzed in terms of a new parameter and are shown to take a simple form in both the centrosymmetric and non-centrosymmetric cases. This analysis provides a sensitive method for determining the twinning fraction. The effects of intensity measurement errors on the observed statistics are discussed.
authors.affiliation: UCLA Department of Chemistry and Biochemistry 90024.
authors.forename: T O
authors.initials: TO
authors.lastname: Yeates
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D008956:Models, Chemical; D015233:Models, Statistical; D014961:X-Ray Diffraction