CONCERNING THE COMPONENTS CONTRIBUTING TO BRAGG REFLECTION PROFILE SHAPES IN SYNCHROTRON-RADIATION STUDIES OF SMALL SINGLE-CRYSTALS

Certain basic matters in a recent synchrotron-radiation study [Rossmanith (1993). Acta Cryst. A49, 80-91] and an allied study which developed a new peak-width formula [Rossmanith (1992). Acta Cryst. A48, 596-610] are questioned. These matters concern the mode of combination of certain components which determine die one-dimensional profile shape of Bragg reflections and the functional form of the wavelength dispersion dependence on the Bragg angle of the sample crystal and that of a monochromator crystal where the respective crystal axes are parallel.